The Messenger of Allah ﷺ entered an enclosure while a servant was following him with a jar of water and he was the youngest amongst us and he placed it by the side of a lote-tree. When the Messenger of Allah, ﷺ relieved himself, he came out and had cleansed himself with water.  

أَنَّ رَسُولَ اللَّهِ ﷺ دَخَلَ حَائِطًا وَتَبِعَهُ غُلاَمٌ مَعَهُ مِيضَأَةٌ هُوَ أَصْغَرُنَا فَوَضَعَهَا عِنْدَ سِدْرَةٍ فَقَضَى رَسُولُ اللَّهِ ﷺ حَاجَتَهُ فَخَرَجَ عَلَيْنَا وَقَدِ اسْتَنْجَى بِالْمَاءِ  

When the Messenger of Allah ﷺ entered the privy, a servant and I used to carry a skin of water, and a pointed staff, and he would cleanse himself with water.  

أَنَّهُ سَمِعَ أَنَسَ بْنَ مَالِكٍ يَقُولُ كَانَ رَسُولُ اللَّهِ ﷺ يَدْخُلُ الْخَلاَءَ فَأَحْمِلُ أَنَا وَغُلاَمٌ نَحْوِي إِدَاوَةً مِنْ مَاءٍ وَعَنَزَةً فَيَسْتَنْجِي بِالْمَاءِ  

The Messenger of Allah ﷺ went to a far-off place in the desert (hidden from the sight of human beings) for relieving himself. Then I brought water for him and he cleansed himself.  

كَانَ رَسُولُ اللَّهِ ﷺ يَتَبَرَّزُ لِحَاجَتِهِ فَآتِيهِ بِالْمَاءِ فَيَتَغَسَّلُ بِهِ