Sunan Abi Dawud 1206
سنن أبي داود#1206SahihNarrated Mu’adh bin Jabal :They (the Companions) proceeded on the expedition of Tabuk along with the Messenger of Allah (ﷺ). He combined the noon and afternoon prayers and the sunset and night prayers. One day he delayed the prayer and came out (of his dwelling) and combined the noon and the afternoon prayers. He then went it and then came out and combined the sunset and the night prayers
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
Zubair Ali ZaiSahih Muslim (706)
In-book reference: 4:9