Sunan an-Nasa'i 977
سنن النسائي#977SahihIt was narrated from Abdullah bin Abi Qatadah that his father said:"The Messenger of Allah (ﷺ) used to recite the Umm Al-Quran and two surahs in the first two rak'ahs of Zuhr and 'Asr, and in the last two with Umm Al-Quran, and he would make us hear a verse sometimes, and he used to make the first rak'ah lengthy
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 11:102