Hadith #5260 (Sahih al-Bukhari)
Book: Sacrifice on Occasion of Birth (`Aqiqa)
Narrator(s): Salman bin Rabee'ah
Grade: Sahih

I heard Allah’s Messenger (ﷺ) saying, “‘Aqiqa is to be offered for a (newly born) boy, so slaughter (an animal) for him, and relieve him of his suffering.”
Narrated Habib bin Ash-Shahid:
Ibn Seereen told me to ask Al-Hassan from whom he had heard the narration of ‘Aqiqa. I asked him and he said, “From Samura bin Jundab.”

Source: https://parallelquran.com/hadith/sahih-al-bukhari-5260/