It is narrated from Sayyiduna Salman that I heard the Prophet (peace and blessings be upon him) say: Perform 'aqiqah on the birth of a boy, remove impurities from him, and sacrifice an animal on his behalf.
Hadith Referenceمسند احمد / مسند المدنيين رضي الله عنهم اجمعين / 16238