Sahih al-Bukhari 5471

It is related by Muhammad that Salman ibn 'Amir said, "There is an 'aqiqa offered for a boy." It is related from Ibn Sirin from Salman from the Prophet, may Allah bless him and grant him peace, and more than one person said it is related by ar-Rabab from Salman ibn 'Amir ad-Dabbi from the Prophet, may Allah bless him and grant him peace. Yazid ibn Ibrahim related it from Ibn Sirin from Salman. It is related that Salman ibn 'Amii said, "I heard the Messenger of Allah, may Allah bless him and grant him peace, say, 'There is an 'aqiqa performed for a boy. Sacrifice blood for him and remove harm* from him." [* The commentators say that this is either the hair on the infant's head when it is born or the foreskin which is removed through circumcision.]