From Sahih Bukhari (Hadith 6379):
Narrated Um Sulaim:that she said, "O Allah's Messenger (ﷺ)! Anas is your servant, so please invoke for Allah's blessing for him." The Prophet (ﷺ) said, "O Allah! Increase his wealth and offspring and bless (for him) whatever You give him
Reference: Bukhari 6379