Sunan Ibn Majah
3165
Sahih+3

It was narrated from Samurah that the Prophet (ﷺ) said:“Every boy is mortgaged by his ‘Aqiqah, so slaughter for him on the seventh day, and shave his head, and name him.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi