جامع الترمذي

Abu Hudhaifah narrated - and he was one of the companions of 'Abdullãh bin Mas'üd - from 'Aishah who said: "I told the Prophet (ﷺ) about a man, so he said: 'I do not like to talk about a man, even if I were to get this or that (for doing so)." She said: "I said: 'O Messenger of Allah! Safiyyah is a woman who is ..." and she used her hand as if to indicate that she is short - "So he said: 'You have said a statement which, if it were mixed in with the water of the sea, it would pollute it."