"When the Messenger of Allah ﷺ would go to the toilet, I and another boy like me would bring a small leather vessel of water and he would clean himself with water."  

سَمِعْتُ أَنَسَ بْنَ مَالِكٍ يَقُولُ كَانَ رَسُولُ اللَّهِ ﷺ إِذَا دَخَلَ الْخَلاَءَ أَحْمِلُ أَنَا وَغُلاَمٌ مَعِي نَحْوِي إِدَاوَةً مِنْ مَاءٍ فَيَسْتَنْجِي بِالْمَاءِ  

"Tell your husbands to clean themselves with water, for I am too shy to tell them myself. The Messenger of Allah ﷺ used to do that."  

أَنْ يَسْتَطِيبُوا بِالْمَاءِ فَإِنِّي أَسْتَحْيِيهِمْ مِنْهُ إِنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَفْعَلُهُ