It is narrated from Sayyiduna Anas (may Allah be pleased with him) that when the soul was breathed into Adam (peace be upon him) and it reached his nostrils, he sneezed and said: 'Alhamdu lillahi rabbil-alamin' (All praise is for Allah, the Lord of the worlds). Then Allah Almighty said: "May Allah have mercy on you." This hadith has a sahih (authentic) chain of narration on the condition of Imam Muslim; even though it is mawquf (stopping at the Companion), its chain is entirely sahih.