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.
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.”
‘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.
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.
