Sahih Bukhari Volume 3, Book 34, Hadith 2057

حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا ابْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ عَبَّادِ بْنِ تَمِيمٍ، عَنْ عَمِّهِ، قَالَ شُكِيَ إِلَى النَّبِيِّ صلى الله عليه وسلم الرَّجُلُ يَجِدُ فِي الصَّلاَةِ شَيْئًا، أَيَقْطَعُ الصَّلاَةَ قَالَ ‏"‏ لاَ، حَتَّى يَسْمَعَ صَوْتًا أَوْ يَجِدَ رِيحًا ‏"‏‏.‏ وَقَالَ ابْنُ أَبِي حَفْصَةَ عَنِ الزُّهْرِيِّ لاَ وُضُوءَ إِلاَّ فِيمَا وَجَدْتَ الرِّيحَ أَوْ سَمِعْتَ الصَّوْتَ‏.‏

Narrated By 'Abbad bin Tamim : That his uncle said: "The Prophet was asked: If a person feels something during his prayer; should one interrupt his prayer?" The Prophet said: No! You should not give it up unless you hear a sound or smell something." Narrated Ibn Abi Hafsa: Az-Zuhri said, "There is no need of repeating ablution unless you detect a smell or hear a sound."