Sunan an-Nasa'i 975
سنن النسائي#975SahihAbdullah bin Abi Qatadah said:"My father told us that the Messenger of Allah (ﷺ) used to recite Umm Al-Quran and two surahs in the first two rak'ahs of Zuhr and 'Asr, 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: 11:100