Anas bin Malik reported,

The Prophet ﷺ came in to visit us when no one was present except myself, my mother, and my maternal aunt Umm Haram. He said, "Stand up so that I may lead you in prayer," though it was not the time of any prescribed prayer. So he led us in prayer.A man asked Thabit, "Where did he position Anas in relation to himself?"He replied, "He placed him on his right side."Then he supplicated for us, the people of the house, asking for every good in this world and the next. My mother said, "Messenger of Allah, your little servant, please ask Allah to bless him."So he supplicated for me with every good, and the last thing he asked for me was when he said, "O Allah, increase his wealth and children, and bless him in what You give him."

Muslim 1501

Sahih

حدثني زهير بن حرب حدثنا هاشم بن القاسم حدثنا سليمان عن ثابت

عن أنس قال

دخل النبي ﷺ علينا وما هو إلا أنا وأمي وأم حرام خالتي فقال قوموا فلأصلي بكم في غير وقت صلاة فصلى بنا فقال رجل لثابت أين جعل أنسا منه قال جعله على يمينه ثم دعا لنا أهل البيت بكل خير من خير الدنيا والآخرة فقالت أمي يا رسول الله خويدمك ادع الله له قال فدعا لي بكل خير وكان في آخر ما دعا لي به أن قال اللهم أكثر ماله وولده وبارك له فيه

مسلم 1501صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Mosques and places of prayer
Chapter
Permissibility of congregation in voluntary prayer and praying on a mat, khumra, garment, and other pure things
Numbering
Darussalam 1501
Muslim 1501