Abdullah bin Abbas reported,

I prayed with the Prophet ﷺ one night and stood on his left side. The Messenger of Allah ﷺ took hold of my head from behind and moved me to his right side. He prayed and then went to sleep. When the muadhdhin came to him, he got up and prayed without performing ablution.

Bukhari 726

Sahih

حدثنا قتيبة بن سعيد قال حدثنا داود عن عمرو بن دينار عن كريب مولى ابن عباس

عن ابن عباس رضي الله عنهما قال

صليت مع النبي ﷺ ذات ليلة فقمت عن يساره فأخذ رسول الله ﷺ برأسي من ورائي فجعلني عن يمينه فصلى ورقد فجاءه المؤذن فقام وصلى ولم يتوضأ

البخاري 726صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Adhan
Chapter
If a man stands to the left of the imam and the imam moves him behind himself to his right, his prayer is complete
Numbering
Darussalam 726
Bukhari 726