Sunan Abi Dawud 2158
سنن أبي داود#2158HasanNarrated Ruwayfi' ibn Thabit al-Ansari: Should I tell you what I heard the Messenger of Allah (ﷺ) say on the day of Hunayn: It is not lawful for a man who believes in Allah and the last day to water what another has sown with his water (meaning intercourse with women who are pregnant); it is not lawful for a man who believes in Allah and the Last Day to have intercourse with a captive woman till she is free from a menstrual course; and it is not lawful for a man who believes in Allah and the Last Day to sell spoil till it is divided
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniHasan
Muhammad Muhyi Al-Din Abdul HamidHasan
Zubair Ali ZaiIsnaad Hasan
In-book reference: 12:113