It was narrated that 'Amr bin 'Ata' said: "I saw Sa'ib bin Yazid sniffing his garment, and I said: 'Why (are you doing) that?' He said: 'I heard the Messenger of Allah say: "No ablution (is needed) unless there is an odor or a sound."

لا تلتقي أسانيد هذه الأحاديث عند راوٍ واحد، وهي على ٧ رواة في أعلاها.