(2) باب الْعَقِيقَةِ عَنِ الْغُلاَمِ،
it was narrated from Um Kurz that the Messenger of Allah said:
"for a boy two sheep, Mukafaatan (of equal age), and for a girl, one sheep."
Reference: Sunan an-Nasa'i 4215
In-book reference: Book 40, Hadith 4
English translation: Vol. 5, Book 40, Hadith 4220