Sunan Abi Dawud 1218
سنن أبي داود#1218SahihNarrated Anas b. Malik :When the Messenger of Allah (ﷺ) proceeded before the sun had declined, he delayed the noon prayer till the time of the afternoon prayer, he would then alight and combine the two prayers. If the sun declined before he moved off, he would offer the noon prayer and rode (the beast) - may peace be upon him. Abu Dawud said: The narrator Mufaddal was the judge of Egypt. His supplication was accepted by Allah; he was the son of Fudalah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (1112) Sahih Muslim (704)
In-book reference: 4:21