Hafsa bint Sirin حفصة بنت سيرين · Sacrifice (Kitab Al-Dahaya)

The Prophet (ﷺ) said: A boy is in pledge for his Aqiqah, Sacrifice is made for him on the seventh day, his head is shaved and he is given name. Abu Dawud said: The word wa yusamma is sounder as narrated by Salam b. Abi Muti' from Qatadah, and narrated by Iyas b. Daghfal and Ash'ath from al-Hassan who narrated wa yusamma (and he is given a name).