Authentic Supplication Number 243.

It is reported by way of `Amr bin Shu`ayb by way of his father, [and in turn] by way of his grandfather, about the Prophet : "That he commanded that a newborn be named on his seventh day, that the harm be removed from him [to shave his head] and al-`aqqa (253)".

Footnotes.
(253) Al-`aqqa here is referring to the act of slaughtering one lamb if the newborn is a girl, and two lambs if the newborn is a boy.

Reporters.
At-Tirmithi said it was comely, and Al-Albani said he agreed due to its testimonials. Al-Albani included this hadeeth in The Authentic of Good Sayings as #170.