Sunan of Du‘ā’ (Supplication)
Making Du‘ā’ while in a state of Tahārah (Purity). Both Al-Bukhāriy and Muslim reported in their Saheehs the Hadeeth of Abi Moussa Al-Ash‘ariy (ABPWH) and his story with his uncle Abi ‘Āmer (ABPWH) when the Prophet (ABPWH) sent him in lead of the army of Awttās.