Sunan Ibn Majah Book 1, Hadith 108

"The Messenger of Allah forbade men to perform ablution with the water left over by a woman, and women to perform ablution with water left over by a man, however both (spouses) may start to perform their ablutions at the same time."

Abu `Abdullah Ibn Majah said: "The first (narration) is correct, and the second (narration) is Wahm (an error)."

Another chain with similar wording.

Previous Hadith

The Messenger of Allah forbade men to perform ablution with the left over water by a woman.

Sunan Ibn Majah Book 1, Hadith 107
Next Hadith

"The Prophet and his wife would take a bath from one vessel, but neither of them would have a bath with the leftover water of the other." (Daif)

Sunan Ibn Majah Book 1, Hadith 109