The Book of al-'Aqiqah
كتاب العقيقة
Chapter 1: For a boy, two sheep
"The messenger of Allah was asked about the 'Aqiqah and he said: "Allah, the mighty and sublime, does not like Al-Uquq' as if he disliked the word (Al-Aqiqah). He said to the Messenger of Allah: 'But one of us may offer a sacrifice when a child is born to him.' He said: 'Whoever wants to offer a sacrifice for his child, let him do so, for a boy; two sheep, Mukafaatan, (of equal age), and for a girl, one.' (One of the narrators) Dawud said: 'I asked Ziad bin Aslam about the word Mukafaatan and he said: 'Two similar sheep that are slaughtered together.
the Messenger of Allah offered the 'Aqiqah for Al-Hasan and Al-Husain.
Chapter 2: The 'Aqiqah for a boy
"For a boy there shoud be an 'Aqiqah, so shed blood for him, and remove the harm from him."
"for a boy two sheep, Mukafaatan (of equal age), and for a girl, one sheep."
Chapter 3: The Aqiqah For A Girl.
"For a boy two sheep, Mukafaatan (of equal age), and for a girl, one sheep,
Chapter 4: How Many Sheep Should Be Slaughtered As An 'Aqiqah For A Girl?
"I came to the Prophet and asked him about the sacrificial meat. I heard him say: 'For a boy, two sheep, and for a girl, one sheep, and it does not matter if they are male or female."'
"For a boy, two sheep, and or a girl, one sheep, and it does not matter if they are male or female
"The Messenger of Allah offered an 'Aqiqah for Al-Hasan and Al-Husain, may Allah be please with them, two rams for each."
Chapter 5: When should the 'Aqiqah be performed?
"Every boy is in pledge for his 'Aqiqah, so slaughter (the animal) for him on the seventh day, and shave his head, and a name"
"Muhammad bin Sirin said to me: 'Ask Al-Hasan (Al-Basri) from whom he heard this Hadith about the 'Aqiqah.' I asked him about that and he said: 'I heard it from Samurh."'