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
Hadith No. 516
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih Lighairihi
Shuaib Al Arnaut:
Sahih Lighairihi
Zubair Ali Zai:
Daif