عَنْ أُمِّ سَلَمَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُجْنِبُ ثُمَّ يَنَامُ ثُمَّ يَنْتَبِهُ ثُمَّ يَنَامُ. رَوَاهُ أَحْمد

Humaid al-Himyari said, “I met a man who was a companion of the Prophet for four years, as was Abu Huraira. He said that God’s messenger forbade that a woman should wash in water left over by a man, or that a man should wash in water left over by a woman.”Musaddad added that they should use it together. Abu Dawud and Nasa’i transmitted it, and Ahmad added at the beginning, “He forbade any of us to use a comb every day, or pass water in a bathing place.” Ibn Majah transmitted it from ‘Abdallah b. Sarjis.