It is narrated from Sayyiduna al-Hakam bin Amr al-Ghifari (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) forbade the leftover of a woman, and Asim did not know whether he meant the water left over from her ablution or the water left over from her drinking.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 916