From Sahih Bukhari (Hadith 6198):
Narrated Abu Musa:I got a son and I took him to the Prophet (ﷺ) who named him Ibrahim, and put in his mouth the juice of a date fruit (which be himself had chewed?, and invoked for Allah's blessing upon him, and then gave him back to me. He was the eldest son of Abu Musa)
Reference: Bukhari 6198