´It was narrated that Abu Humaid As-Sa'idi said:` "At the end of the last two rak'ahs of the prayer, the Prophet (ﷺ) would move his left foot forward and sit on his left buttock, Mutawarrikan, then he would say the taslim.
Hadith ReferenceSunan an-Nasa'i / The Book of Forgetfulness (In Prayer) / Hadith: 1263
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح