حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ لاَ بَأْسَ أَنْ يُغْتَسَلَ بِفَضْلِ الْمَرْأَةِ مَا لَمْ تَكُنْ حَائِضًا أَوْ جُنُبًا ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umarused to say, "There is no harm in doing ghusl with water that has beenused by one's wife as long as she is not menstruating or in a state ofmajor ritual impurity (junub)." Translation Not Available

Book Ref: Muwatta Imam Malik Book 2 Hadith 118
Web Ref:  Muwatta Imam Malik Book 2 Hadith 88