The Book of al-'Aqiqah
40/5. Chapter:
When should the 'Aqiqah be performed?
Sunan an-Nasai
أَخْبَرَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، قَالَ حَدَّثَنَا قُرَيْشُ بْنُ أَنَسٍ، عَنْ حَبِيبِ بْنِ الشَّهِيدِ، قَالَ لِي مُحَمَّدُ بْنُ سِيرِينَ سَلِ الْحَسَنَ مِمَّنْ سَمِعَ حَدِيثَهُ، فِي الْعَقِيقَةِ . فَسَأَلْتُهُ عَنْ ذَلِكَ، فَقَالَ سَمِعْتُهُ مِنْ، سَمُرَةَ .
It was narrated from Habib bin Ash-Shahid: "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."'
Reference : Sunan an-Nasa'i 4221In-book reference : Book 40, Hadith 10English translation : Vol. 5, Book 40, Hadith 4226