Narrated Abdullah ibn Buhaynah: The Messenger of Allah ﷺ led us in prayer praying two rak'ahs. When he stood up and did not sit (at the end of two rak'ahs) the people stood up along with him. When he finished the prayer and we expect him to give the salutation, he said: "Allah is most great. " While sitting and made two prostrations before giving the salutation. Then he gave it.
Hadith Referenceسنن ابي داود / أبواب تفريع استفتاح الصلاة / 1034
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري (1224) صحيح مسلم (570)