Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: One of the wives of the Prophet (peace and blessings of Allah be upon him) performed ghusl (ritual bath) for janabah. The Prophet (peace and blessings of Allah be upon him) came and began to perform wudu (ablution) with the water she had left over. That woman said to him: (This is the leftover water from my ghusl.) The Prophet (peace and blessings of Allah be upon him) said: Nothing makes water impure.
Hadith Referenceصحیح ابن حبان / كتاب الطهارة / 1242
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - المصدر نفسه.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده كسابقه، عبد الله" هو ابن المبارك.