وَعَن المُهَاجر بن قنفذ
أَنَّهُ أَتَى النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُوَ يَبُولُ فَسَلَّمَ عَلَيْهِ فَلَمْ يَرُدَّ عَلَيْهِ حَتَّى تَوَضَّأ ثمَّ اعتذر إِلَيْهِ فَقَالَ: «إِنِّي كرهت أَن أذكر الله عز وَجل إِلَّا على طهر أَو قَالَ على طَهَارَة»
He came upon the Prophet (sallallahu alayhi wa sallam) when he was passing water and saluted him, but he did not respond to the salutation till he had performed ablution. He then made his excuse to him saying, “I dislike mentioning God’s name except when I am in a state of purity.” Abu Dawud transmitted it. Nasai transmitted it up to “till he had performed ablution” and said, “then when he had performed ablution he responded to it.”