Narrated `Abbas bin Tamim:that his uncle said: "The Prophet (ﷺ) was asked: If a person feels something during his prayer; should one interrupt his prayer?" The Prophet (ﷺ) 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."
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.
Bukhari
Sales and Trade • Hadith 10