English Translation
Narrated 'Abbas 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."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.