The Prophet said: "Whoever uses stones to clean himself, let him use an odd number of stones. Whoever does that has done well, and whoever does not, there is no harm in it. Whoever uses a tooth stick should spit out (whatever he removes) and whoever removes (the particle of food) by dislodging it with his tongue should swallow it. Whoever does that has done well, and whoever does not, tere is no harm in it. Whoever goes to the toilet should conceal himself, and if he cannot find anything except a pile of sand (behind which to conceal himself), then he should use that, for the Shaitan plays with the backside of the son of Adam. Whoever does that has done well, and whoever does not, there is no harm in it."  

عَنِ النَّبِيِّ ﷺ قَالَ مَنِ اسْتَجْمَرَ فَلْيُوتِرْ مَنْ فَعَلَ ذَلِكَ فَقَدْ أَحْسَنَ وَمَنْ لاَ فَلاَ حَرَجَ وَمَنْ تَخَلَّلَ فَلْيَلْفِظْ وَمَنْ لاَكَ فَلْيَبْتَلِعْ مَنْ فَعَلَ ذَلِكَ فَقَدْ أَحْسَنَ وَمَنْ لاَ فَلاَ حَرَجَ وَمَنْ أَتَى الْخَلاَءَ فَلْيَسْتَتِرْ فَإِنْ لَمْ يَجِدْ إِلاَّ كَثِيبًا مِنْ رَمْلٍ فَلْيَمْدُدْهُ عَلَيْهِ فَإِنَّ الشَّيْطَانَ يَلْعَبُ بِمَقَاعِدِ ابْنِ آدَمَ مَنْ فَعَلَ فَقَدْ أَحْسَنَ وَمَنْ لاَ فَلاَ حَرَجَ  

"Whoever applies kohl to his eyes, let him add it an odd number of times. Whoever does that has done well, and whoever does not, there is no harm in it. And whoever dislodges (a particle of food from between the teeth) by dislodging it with his tongue, let him swallow it."  

حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ الصَّبَّاحِ بِإِسْنَادِهِ نَحْوَهُ وَزَادَ فِيهِ وَمَنِ اكْتَحَلَ فَلْيُوتِرْ مَنْ فَعَلَ فَقَدْ أَحْسَنَ وَمَنْ لاَ فَلاَ حَرَجَ وَمَنْ لاَكَ فَلْيَبْتَلِعْ  

"I was with the Prophet on a journey, and he wanted to relieve himself. He said to me: 'Go to those two small date-palm trees and tell them: "The Messenger of Allah orders you to come together.'" So they came together and he concealed himself behind them, and relieved himself. Then he said to me: 'Go to them and tell them: "Go back, each one of you, to your places.'" So I said that to them and they went back."  

كُنْتُ مَعَ النَّبِيِّ ﷺ فِي سَفَرٍ فَأَرَادَ أَنْ يَقْضِيَ حَاجَتَهُ فَقَالَ لِي ائْتِ تِلْكَ الأَشَاءَتَيْنِ قَالَ وَكِيعٌ يَعْنِي النَّخْلَ الصِّغَارَ قَالَ أَبُو بَكْرٍ الْقِصَارَ فَقُلْ لَهُمَا إِنَّ رَسُولَ اللَّهِ ﷺ يَأْمُرُكُمَا أَنْ تَجْتَمِعَا فَاجْتَمَعَتَا فَاسْتَتَرَ بِهِمَا فَقَضَى حَاجَتَهُ ثُمَّ قَالَ لِي ائْتِهِمَا فَقُلْ لَهُمَا لِتَرْجِعْ كُلُّ وَاحِدَةٍ مِنْكُمَا إِلَى مَكَانِهَا فَقُلْتُ لَهُمَا فَرَجَعَتَا  

"The thing that the Prophet most liked to conceal himself behind when relieving himself was a hillock or a stand of date-palm trees."  

كَانَ أَحَبَّ مَا اسْتَتَرَ بِهِ النَّبِيُّ ﷺ لِحَاجَتِهِ هَدَفٌ أَوْ حَائِشُ نَخْلٍ  

"The Messenger of Allah turned towards a mountain pass and urinated, until I took pity on him because of the way he parted his legs when he urinated."  

عَدَلَ رَسُولُ اللَّهِ ﷺ إِلَى الشِّعْبِ فَبَالَ حَتَّى أَنِّي آوِي لَهُ مِنْ فَكِّ وَرِكَيْهِ حِينَ بَالَ