It is narrated from Sayyiduna Samurah bin Jundub (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "A boy is held in pledge for his 'aqiqah. (An animal) should be slaughtered on his behalf on the seventh day, his head should be shaved, and he should be given a name." This hadith has a sahih (authentic) chain, and they (the two Shaykhs) did not record it.