"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." (Using translation from Nasāʾī 46)
أَنْ يَسْتَطِيبُوا بِالْمَاءِ فَإِنِّي أَسْتَحْيِيهِمْ مِنْهُ «إِنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَفْعَلُهُ»