It was narrated that Anas said:
"I put out water for the Messenger of Allah for a bath, and he had a bath after going to all of his wives in one night."

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ صَالِحِ بْنِ أَبِي الأَخْضَرِ، عَنِ الزُّهْرِيِّ، عَنْ أَنَسٍ، قَالَ وَضَعْتُ لِرَسُولِ اللَّهِ ـ ﷺ ـ غُسْلاً فَاغْتَسَلَ مِنْ جَمِيعِ نِسَائِهِ فِي لَيْلَةٍ .