Sunan an-Nasa'i 3293
سنن النسائي#3293SahihIt was narrated that Abu Hurairah said:"The Messenger of Allah forbade taking a woman as a co-wife to her paternal aunt or her maternal aunt
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 26:98