Sahih al-Bukhari 135
Sahih al-Bukhari · Book 4: Ablutions (Wudu') · Chapter. No Salat (prayer) Is Accepted Without Ablution (i.e, To Remove, The Small Hadith By Ablution Or The Big Hadith By Taking A Bath)
Narrated Abu Huraira:
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ ، قَالَ أَخْبَرَنَا عَبْدُ الرَّزَّاقِ ، قَالَ أَخْبَرَنَا مَعْمَرٌ ، عَنْ هَمَّامِ بْنِ مُنَبِّهٍ ، أَنَّهُ سَمِعَ أَبَا هُرَيْرَةَ ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تُقْبَلُ صَلاَةُ مَنْ أَحْدَثَ حَتَّى يَتَوَضَّأَ " . قَالَ رَجُلٌ مِنْ حَضْرَمَوْتَ مَا الْحَدَثُ يَا أَبَا هُرَيْرَةَ قَالَ فُسَاءٌ أَوْ ضُرَاطٌ .
Allah's Messenger (ﷺ) said, "The prayer of a person who does Hadath (passes urine, stool or wind) is not accepted till he performs the ablution." A person from Hadaramout asked Abu Huraira, "What is 'Hadath'?" Abu Huraira replied, " 'Hadath' means the passing of wind."