It was narrated on the authority of Abi Tha'labah Al-Khushani Jurthum bin Nashir, radiyallahu 'anhu, that the Messenger of Allah, sallallahu 'alayhi wasallam, said:
\"Verily Allah the Almighty has prescribed the obligatory deeds, so do not neglect them; He has set certain limits, so do not go beyond them; He has forbidden certain things, so do not indulge in them; and He has said nothing about certain things, as an act of mercy to you, not out of forgetfulness, so do not go enquiring into these.\" [Related by Al-Daraqutni and others - Al-Nawawi said this is a hasan (fine) hadith]