Abu Tamim al-Jayshani أبو تميم الجيشاني, عبد الله بن مالك · The Book of the Times (of Prayer)

"Muhammad bin 'Ali and I entered upon Jabir bin 'Abdullah Al-Ansari. We said to him: 'Tell us about the prayer of the Messenger of Allah (ﷺ).' That was at the time of Al-Hajjaj bin Yusuf. He said: 'The Messenger of Allah (ﷺ) came out and prayed Zuhr when the sun had passed its zenith and the shadow (of a thing) was the length of a sandal-strap. Then he prayed 'Asr when the shadow of a man was the length of…

It was narrated from Abu At-Tufail 'Amir bin Wathilah that Mu'adh bin Jabal told him that they went out with the Messenger of Allah (ﷺ) in the year of Tabuk, and the Messenger of Allah (ﷺ) was joining Zuhr and 'Asr, and Maghrib and 'Isha'. He delayed the prayer one day then he went out and prayed Zuhr and 'Asr together, then he went in and came out again and prayed Maghrib and 'Isha'.