Mishkat al-Masabih

Salman b. ‘Amir ad Dabbl told that he heard God's messenger say, “Along with a boy there is an ‘aqiqa, so shed blood on his behalf and remove injury from him.”* *This is variously explained as shaving the hair of the infant, or removing the impurities with which it is defiled at birth, or even circumcision. Bukhari transmitted it.