Sunan an-Nasa'i 1269
سنن النسائي#1269SahihIt was narrated from Ibn 'Umar that:When the Messenger of Allah (ﷺ) sat during the prayer, he put his hands on his knees and raised the finger that is next to the thumb, and supplicates with it, and his left hand was on his knee laid on it
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 Muslim
In-book reference: 13:91