Anas said that God’s Messenger prayed four rak'as at the noon prayer in Medina and two rak'as at the afternoon prayer in Dhul Hulaifa. (Bukhari and Muslim.)

Haritha b. Wahb al-Khuza‘i said, “God’s Messenger led us in a prayer of two rak'as in Mina when we were more numerous and more secure than we had ever been before.” (Bukhari and Muslim.)

I remarked to ‘Umar b. al-Khattab that God had said, “You may shorten the prayer,” only “if you fear those who are infidels may afflict you” (Al-Qur’an; 4:101), whereas the people were now safe. He replied that he had wondered about the same matter, so he asked God's Messenger and received the reply, “It is an act of charity which God has done to you, so accept His charity.” Muslim transmitted it.

We went out from Medina to Mecca with God’s Messenger and he prayed two rak'as at each time of prayer till we returned to Medina. On being asked whether they had stayed any length of time in Mecca, he replied that they had stayed ten days. (Bukhari and Muslim.)

Ibn ‘Abbas said the Prophet made a journey during which he had a stop of nineteen days, and he prayed two rak'as at each time of prayer. Ibn ‘Abbas said, “So when we are stopping nineteen days between here and Mecca we pray two rak'as each time, but when we stop more than that we pray four.” Bukhari transmitted it.

I accompanied Ibn ‘Umar on the road to Mecca and he led us in two rak'as at the noon prayer, then went to the place where he had alighted and sat down. Seeing some people standing he asked what they were doing, and I replied that they were engaged in glorifying God. He said, “If I had done so I would have perfected my prayer. I accompanied God's Messenger, and he prayed two rak'as and nothing more while on a journey. I also accompanied Abu Bakr, ‘Umar and ‘Uthman, and they did the same." (Bukhari and Muslim.)

Ibn ‘Abbas said that God’s Messenger used to combine the noon and the afternoon prayer while travelling, and also to combine the sunset and the evening prayer. Bukhari transmitted it.

Ibn ‘Umar said that on a journey God’s Messenger would pray on his riding beast in whatever direction it turned, making a sign with his head* in prayer during the night, but not in the obligatory prayers; and he would observe a witr on his riding beast. *To indicate the bowing and the prostration. (Bukhari and Muslim.)

‘A'isha said, “God’s Messenger has done all that; he both shortened the prayer and observed it completely.” [Baghawi] transmitted it in Sharh as-sunna.

I went on an expedition with the Prophet, and I was present with him at the Conquest. He stayed eighteen days in Mecca and prayed only two rak'as [at each time of prayer]. He said, “You who live in the town must pray four; we are travellers.” Abu Dawud transmitted it.

Ibn ‘Umar said, “When travelling I prayed along with the Prophet two rak'as at the noon prayer and two after it.” In a version he said, “I prayed with the Prophet both when resident and when travelling. When resident I prayed along with him four rak'as at the noon prayer and two after it, and when travelling two at it and two after it; two rak'as at the afternoon prayer after which he prayed no more; and both when resident and travelling alike three rak'as at the sunset prayer, in which he never prayed less whether resident or travelling, this being the witr of the daytime. After it he prayed two rak'as.” Tirmidhi transmitted it.

if the sun set before he moved off he combined the sunset and the evening prayer, but if he moved off before sunset he delayed the sunset prayer till he halted for the evening prayer and then combined them. *In 19 AH.Abu Dawud transmitted it.

Anas said that when God’s Messenger was on a journey and wished to say voluntary prayers he made his she-camel face the qibla and said, “God is most great,” then prayed in whatever direction his mount made him face. Abu Dawud transmitted it.

Jabir said, “God’s Messenger sent me on some business, and when I came to him he was praying on his riding-beast towards the east and making the prostration lower than the bowing.” Abu Dawud transmitted it.

Ibn ‘Umar said that God’s Messenger prayed two rak'as in Mina, as did Abu Bakr after his death, ‘Umar after Abu Bakr’s death, and ‘Uthman in the early part of his Caliphate, but afterwards ‘Uthman prayed four. When Ibn ‘Umar prayed with an imam he prayed four, but when he prayed alone he prayed two. (Bukhari and Muslim.)

‘A’isha said that the prayer was prescribed as consisting of two rak'as, and after God's Messenger emigrated it was prescribed as four, but prayer while travelling was left according to the original prescription. Zuhri said he asked ‘Urwa why ‘A’isha said prayers in the complete form and he replied that she interpreted the matter herself as ‘Uthman did. (Bukhari and Muslim.)

Ibn ‘Abbas said, “God has prescribed the prayer by the tongue of your Prophet as four rak'as when resident, two when travelling, and one when danger is present.” Muslim transmitted it.

He and Ibn ‘Umar said that God’s Messenger established the practice of praying two rak'as when travelling, they constituting a complete observance and not an abbreviation; and the witr while travelling is a sunna. Ibn Majah transmitted it.

Malik said he heard that Ibn ‘Abbas used to shorten the prayer on a journey equivalent to that between Mecca and at-Ta'if, or between Mecca and ‘Usfan, or between Mecca and Judda. Malik said that that was four postal stages. He transmitted it in al-Muwatta’.

Al-Bara’ said, "I accompanied God’s Messenger on eighteen journeys and I never saw him fail to pray two rak'as when the sun had passed the meridian before praying the noon prayer.” Abu Dawud and Tirmidhi transmitted it, Tirmidhi saying that this is a gharib tradition.