Spitting in the mosque is a sin and it is expiated by burying the spittle.

The Prophet(ﷺ) liked the twigs of the date-palm, and he often had one of them in his hand. He entered the mosque and saw phlegm in the wall towards qiblah and he scraped it. He then turned towards people in anger and said: Is any one of you is pleased to spit in his face? When any of you faces qiblah, he indeed faces his Lord, the Majestic the Glorious: the angels are at right side. Therefore, he should not spit on his right side or before him towards qiblah. He should spit towards his left side or beneath his foot. If he is in a hurry, he should do so-and-so. Describing it Ibn ‘Ajlan said: He should spit in his cloth and fold a part of it over the other.

I came to the Messenger of Allah(ﷺ) who was saying prayer. He spat beneath his left foot.

“He then rubbed it with his shoe."

AbuSa'id said: I saw Wathilah ibn al-Asqa' in the mosque of Damascus. He spat at the mat and then rubbed it with his foot. He was asked: Why did you do so? He said: Because I saw the Messenger of Allah (ﷺ) doing so.

Abu Salih narrated this tradition with a different chain of transmitters to the same effect as reported by Sulaiman b. Dawud. But this version has the word KHARAJA (he went out) instead of BARAZA (proceeded).

and the narrator Musa said: As far as Amr thinks, the Prophet (ﷺ) said: The whole earth is a place of prayer except public baths and graveyards.

The Messenger of Allah (May peace be upon him) was asked about saying prayer at places where the camels kneel down. He replied; Do not say prayer at places where the camels kneel down because they are the places of devils. And he was asked about saying prayer in the fold of sheep. He replied: pray there because they are the places of blessing.

The Messenger of Allah (May peace be upon him) himself taught me the call to prayer (adhan). He asked me to pronounce: Allah is most great. Allah is most great. Allah is most great. Allah is most great: I testify that there is no god but Allah. I testify that there is no god but Allah; I testify that Muhammad is the Messenger of Allah, I testify that Muhammad is Messenger of Allah. Then repeat and raise your voice; I testify that there is no god but Allah, I testify that there is no god but Allah ; I testify that Muhammad is the Messenger of Allah; I testify that Muhammad is the Messenger of Allah; come to prayer, come to prayer; come to salvation, come to salvation; Allah is most great. Allah is most great; there is no god but Allah.

Allah is most great, Allah is most great; I testify that there is no god but Allah. He then narrated adhan like the one contained in the tradition transmitted by Ibn Juraij from ‘Abd al-aziz b. ‘abd al-Malik to the same effect. The version Malik b. Dinar has. I asked the son of Abu Mahdhurah, saying: Narrate to me the adhan of your father narrated from the Messenger of Allah (May peace be upon him). He said: Allah is most great, Allah is most great, that is all. Similar is the version narrated by Ja’far b. Sulaiman from the son of Abd Muhdhurah from his uncle on the authority of his grandfather, excepting that he said; Then repeat and raise your voice. Allah is most great. Allah is most great.

Anas reported; Bilal was commanded to pronounce Adhan in double pairs and IQAMAH in single pairs. Hammam added in his version; “except IQAMAH”.

The Prophet (ﷺ) intended to do many things for calling (the people) to prayer, but he did not do any of them. Then Abdullah ibn Zayd was taught in a dream how to pronounce the call to prayer. He came to the Prophet (ﷺ) and informed him. He said: Teach it to Bilal. He then taught him, and Bilal made a call to prayer. Abdullah said: I saw it in a dream and I wished to pronounce it, but he (the Prophet) said: You should pronounce iqamah.

My grandfather pronounced the Iqamah.

When the adhan for the dawn prayer was initially introduced, the Prophet (ﷺ) commanded me to call the adhan and I did so. Then I began to ask: Should I utter iqamah, Messenger of Allah? But he began to look at the direction of the east, (waiting) for the break of dawn, and said: No.

When the dawn broke, he came down and performed ablution and he then turned to me. In the meantime his Companions joined him. Then Bilal wanted to utter the iqamah, but the Prophet (ﷺ) said to him: The man of Suda' has called the adhan, and he who calls the adhan utters the iqamah.

The supplication made between the adhan and the iqamah is not rejected.

The Messenger of Allah (ﷺ) taught me to say when the adhan for the sunset prayer was called; "O Allah, this is the time when Thy night comes on, Thy day retires, and the voices of Thy summoners are heard, so forgive me."

Mujahid reported: I was in the company of Ibn Umar. A person invited the people for the noon or afternoon prayer (after the adhan had been called). He said: Go out with us (from this mosque) because this is an innovation (in religion).

I asked Thabit al-Bunani whether it was permissible for a man to talk after the qamah had been pronounced. He narrated a tradition on the authority of Anas: (once) the Iqamah was pronounced, and a person came to the apostle of Allah (ﷺ) and detained him after the Iqamah had been pronounced.

we stood for praying at Mina when the Imam had not come out. Some of us sat down (and I too). An old man from Kufah said to me: Why did you down? I said : Ibn Buraidah, this is Sumud (i.e., waiting for the Imam in the standing condition). The old man then narrated a tradition from ‘Abd al-Rahman b. ‘Awaajah on the authority of al-Bara’ b. ‘Azib: We would stand in rows during the time of the Messenger of Allah (ﷺ) for a long time before he pronounced Takbir. He further said; Allah, the Exalted and Mighty, sends blessings and the angles invoke blessings for those who are nearer to the front rows. No step is more liking to Allah than a step which one takes to join the row (of the prayer).

the Iqamah was pronounced (for the night prayer) and the Messenger of Allah (ﷺ) remained engaged in talking (to a person) in the corner of the mosque. He did not begin prayer until the people slept.