From Sahih Bukhari (Hadith 6645):
Narrated Anas bin Malik:An Ansari woman came to the Prophet (ﷺ) in the company of her children, and the Prophet (ﷺ) said to her, "By Him in Whose Hand my soul is, you are the most beloved people to me!" And he repeated the statement thrice
Reference: Bukhari 6645