The Prophet (ﷺ) said: Shortening the salutation is sunnah (commendable).

The narrator 'Isa said: Ibn al-Mubarak prohibited me from reporting this tradition as a statement of the Prophet (ﷺ).

Abu Dawud said: I heard Abu 'Umar 'Isa b. Yunus al-Fakhuri al-Ramil saying: When al-Firyabi returned from Mecca, he gave up narrating this tradition as a statement of the Prophet (ﷺ). He said: Ahmad b. Hanbal forbade to report this tradition directly from the Prophet (ﷺ).

When any of you breaks wind during prayer, he must withdraw, perform ablution, and repeat the prayer.

The Prophet (ﷺ) said: Cannot any one of you (according to the version of the narrator AbdulWarith) step forward or backward or at his right or left. The version of Hammad added: during prayer; that is, in supererogatory prayer.

An imam of ours, whose kunyah (surname) was AbuRimthah, led us in prayer and said: I prayed this prayer, or one like it, with the Prophet (ﷺ). AbuBakr and Umar were standing in the front row on his right and there was a man who had been present at the first takbir in the prayer. The Prophet of Allah (ﷺ) offered the prayer, then gave the salutation to his right and his left so that we saw the whiteness of his cheeks, then turned away as AbuRimthah (meaning himself) had done.

The man who has been present with him at the first takbir in the prayer then got up to pray another prayer, whereupon Umar leaped up and, seizing him by the shoulders, shook him and said: Sit down, for the People of the Book perished for no other reason than that there was no interval between their prayers.

The Prophet (ﷺ) raised his eyes and said: Allah has made you say what is right, son of al-Khattab.

Abu Dawud said: Sometimes the name of Abu Umayyah is narrated instead of Abu Rimthah.

The Messenger of Allah (ﷺ) led us in one of the evening (‘Asha) prayers, noon or afternoon. He led us in two Rak’ahs and gave the salutation. He then got up going towards a piece of wood which was placed in the front part of the mosque. He placed his hands upon it, one on the other, looking from his face as if he were angry. The people came out hastily saying: the prayer has been shortened. Abu Bakr and ‘Umar were among the people, but they were too afraid to speak to him. A man whom the Messenger of Allah (ﷺ) would call “ the possessor of arms” (Dhu al-Yadain) stood up (asking him): Have you forgotten. The Messenger of Allah, or has the prayer been shortened? He said: I have neither forgotten nor has it been shortened. He said : Messenger of Allah , you have forgotten. The Messenger of Allah (ﷺ) turned towards the people and asked : did the possessor of arms speak the truth? They made a sign , that is, yes. The Messenger of Allah (ﷺ) returned to his place and prayed the remaining two Rak’ahs, then gave the salutation; he then uttered the takbir and prostrated himself as usual or prolonged. He then raised his head and uttered the takbir; then he uttered the takbir and made prostration as usual or made longer (prostration). Then he raised his head his and uttered the takbir (Allah is most great). The narrator Muhammad was asked : Did he give the salutation (while prostrating) dueto forgetfulness? He said : I do not remember it from Abu Hurairah. But we Are sure that ‘Imran b. Husain (in his version) said; he then gave the salutation.

Abu dawud said: Anyone who narrated this tradition did not mention the words “ then he uttered the takbir”, nor the words “he returned”

then he gave the salutation.” The narrator said: I asked; What about the Tashahud? He replied: I did not hear thing about the tashahhud, but it is more liking to me that one should recite the tashahhud. This version has not the words “whom he called the possessor of arms(Dhu al-yadain).” Nor the words “they made a sign,” nor the word “anger”. The tradition narrated by Hammad from Ayyub is more perfect.

Abu Dawud said : This tradition has also been narrated by Habib b. al-shahid, Humaid, Yunus, and Asim b. al-Ahwal, from Muhammad on the authority of abu Hurairah none of them mentioned what Hammad b. Zaid mentioned from from Hisham that he uttered the takbir; then uttered the takbir and prostrated himself. Hammad b. Sulaimah and Abu BAkr b. ‘Ayyash also narrated this tradition from Hisham, but they did not narrate from him what HAmmad b. zaid narrated that he uttered the takbir and again uttered the takbir.

he did not make two prostrations (at the end of prayer) due to forgetfulness until Allah gave him satisfaction about it.

he did not make two prostrations on account of forgetfulness.

Abu Hurairah reported; The Prophet (ﷺ) offered the noon prayer and he gave the salutation at the end of two rakahs. He was asked. Has the prayer been shortened ? then he offered two rakahs of the prayer and made two prostrations (at the end of it).

When the Prophet (ﷺ) finished two rak'ahs of an obligatory prayer, a man asked him: Messenger of Allah, has the prayer been shortened, or have you forgotten? he replied: I did not do all that. The people said: Messenger of Allah, you did that. Therefore, he offered another two rak'ahs or prayer and did not make two prostrations due to forgetfulness.

Abu Dawud said: This tradition has also been narrated by Dawud al-Hussain from Abu Sufyan, freed slave of Ibn Abi Ahmad on the authority of Abu Hurairah from the Prophet (ﷺ). This version goes: He then made two prostrations while he was sitting after the salutation.

Abu Hurairah reported; He then made two prostration on account of forgetfulness after he had given the salutation.

The Messenger of Allah (ﷺ) led us in prayer and gave the salutation after two rakahs of prayer. He narrated this tradition like that of Ibn Sirin from Abu Hurairah. This version adds; he gave the salutation and prostrated two prostrations due to forgetfulness.

The Messenger of Allah (ﷺ) gave the salutation at the end of three rakahs in the afternoon prayer, then went into the apartment (according to the version of maslamah). A man called al-Khirbaq who had long arms got up and said ; has the prayer been shortened, Messenger of Allah ? He came out angrily trailing his cloak and said : Is he telling the truth ? they said; Yes. He then prayed that rakah, then gave the salutation, then made two prostrations, then gave the salutation.

The Messenger of Allah (ﷺ) prayed five rak’ahs in the noon prayer. He was asked whether the prayer had been extended. He asked what they meant by that. The people said : you prayed five rak’ahs. Then he made two prostrations after having given the salutation.

The Messenger of Allah (ﷺ) offered prayer. The version of the narrator Ibrahim goes: I do not know whether he increased or decreased (the rak'ahs of prayer).

When he gave the salutation, he was asked: Has something new happened in the prayer, Messenger of Allah? He said: What is it? They said: You prayed so many and so many (rak'ahs). He then relented his foot and faced the Qiblah and made two prostrations. He then gave the salutation. When he turned away (finished the prayer), he turned his face to us and said: Had anything new happened in prayer, I would have informed you. I am only a human being and I forget just as you do; so when I forget, remind me, and when any of you is in doubt about his prayer he should aim at what is correct, and complete his prayer in that respect, then give the salutation and afterwards made two prostrations.

The narrator Husain also reported it like al-A'mash.

Messenger of Allah, has (the number of the rak’ahs of) the prayer been increased ? he said : No. they said; you have offered five rak’ahs of prayer. He then turned away and performed two prostrations, and afterwards gave the salutation. He then said : I am only a human being, I forget, as you forget.

One day the Messenger of Allah (ﷺ) prayed and gave the salutation while a rak'ah of the prayer remained to be offered. A man went to him and said: You forgot to offer one rak'ah of prayer. Then he returned and entered the mosque and ordered Bilal (to utter the Iqamah). He uttered the Iqamah for prayer. He then led the people in one rak'ah of prayer. I stated it to the people. They asked me: Do you know who he was? I said: No, but I can recognise him if I see him. Then the man passed by me, I said: It is he. The people said: This is Talhah ibn Ubaydullah.