Sunan an-Nasa'i 883
سنن النسائي#883SahihSa'eed bin Sam'an said Abu Hurairah came to the Masjid of Banu Zuraiq and said:"There are three things that the Messenger of Allah (ﷺ) used to do and the people have abandoned; he used to raise his hands extended when praying, and he would fall silent briefly, and say takbir when he prostrated and when he sat up
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 ZaiIsnaad Hasan
In-book reference: 11:8