Amr bin 'Ali bin Bahr al-Bahli عمرو بن علي بن بحر الباهلي · The Book of Salah

"Urwah told me that 'Aishah said: 'Allah enjoined the salah upon the Messenger of Allah (ﷺ), and the first thing that He enjoined was two Rak'ahs at a time, then it was made complete four Rak'ahs while in the state of residence but the prayer when traveling remained two Rak'ahs, as it was first enjoined.'"

"Angels come to you in succession by night and day, and they meet at Fajr prayer and 'Asr prayer. Then those who spent the night among you ascend, and He (Allah) will ask them, although He knows best: 'In what condition did you leave My slaves.' They will say: 'We left them when they were praying and we came to them when they were praying.'"

"The Messenger of Allah (ﷺ) came to Al-Madinah and prayed toward Bait Al-Maqdis for sixteen months, then he was commanded to face towards the Ka'bah. A man who had prayed with the Prophet (ﷺ) passed by some of the Ansar and said: 'I bear witness that the Messenger of Allah (ﷺ) has been commanded to face towards the Ka'bah' so they turned to face the Ka'bah."