Sunan an-Nasa'i — The Book of Purification — Hadith No: 14
Hadith
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا جَعْفَرٌ، - هُوَ ابْنُ سُلَيْمَانَ - عَنْ أَبِي عِمْرَانَ الْجَوْنِيِّ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ وَقَّتَ لَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم فِي قَصِّ الشَّارِبِ وَتَقْلِيمِ الأَظْفَارِ وَحَلْقِ الْعَانَةِ وَنَتْفِ الإِبْطِ أَنْ لاَ نَتْرُكَ أَكْثَرَ مِنْ أَرْبَعِينَ يَوْمًا . وَقَالَ مَرَّةً أُخْرَى أَرْبَعِينَ لَيْلَةً .
It was narrated that Anas bin Malik said:"A time limit was set for us, by the Messenger of Allah (ﷺ), regarding trimming the mustache, clipping the nails and plucking the pubes; we were not to leave that for more than forty days," on one occasion he said: "Forty nights
Sunan an-Nasa'i — The Book of Purification — Hadith No: 38
Hadith
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ حَدَّثَنَا مُعَاذُ بْنُ مُعَاذٍ، قَالَ أَنْبَأَنَا سَعِيدٌ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ حُضَيْنٍ أَبِي سَاسَانَ، عَنِ الْمُهَاجِرِ بْنِ قُنْفُذٍ، أَنَّهُ سَلَّمَ عَلَى النَّبِيِّ صلى الله عليه وسلم وَهُوَ يَبُولُ فَلَمْ يَرُدَّ عَلَيْهِ السَّلاَمَ حَتَّى تَوَضَّأَ فَلَمَّا تَوَضَّأَ رَدَّ عَلَيْهِ .
It was narrated from Al-Muhajir bin Qunfudh that he greeted the Prophet (ﷺ) with Salam while he was urinating, and he did not return the greeting until he had performed Wudu'. When he had performed Wudu' he returned the greeting