One day the Prophet ﷺ had intercourse with all his wives. He took a bath after each intercourse. I asked him: Messenger of Allah, why don't you make it a single bath? He replied: This is more purifying, better and cleaning. Abu Dawud said: The tradition narrated by Anas is more sound that this tradition. (Using translation from Abū Dāʾūd 219)   

أَنَّ رَسُولَ اللهِ ﷺ طَافَ عَلَى نِسَائِهِ ذَاتَ يَوْمٍ فَجَعَلَ يَغْتَسِلُ عِنْدَ هَذِهِ وَعِنْدَ هَذِهِ قُلْتُ يَا رَسُولَ اللهِ لَوْ جَعَلْتَهُ غُسْلًا وَاحِدًا قَالَ «هَذَا أَزْكَى وَأَطْيَبُ وَأَطْهَرُ»