Sunan an-Nasa'i 43
Sahih Graded by Abu Ghuddah Book of The Book of Purification · Hadith 43 of 5,758أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاَهِيمَ، قَالَ أَنْبَأَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ هِلاَلِ بْنِ يِسَافٍ، عَنْ سَلَمَةَ بْنِ قَيْسٍ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ " إِذَا اسْتَجْمَرْتَ فَأَوْتِرْ " .
Narrated by Salamah bin Qais
It was narrated from Salamah bin Qais that the Messenger of Allah (ﷺ) said:"When you clean yourselves (with stones, after defecating), use an odd number
References
Sunan an-Nasa'i 43
In-book: Book 1, Hadith 43 Source: hadith-api (fawazahmed0)