(48) باب تَحْرِيمِ الْجَمْعِ بَيْنَ الْمَرْأَةِ وَخَالَتِهَا .
It was narrated from Abu Hurairah that the Messenger of Allah said:
"A woman should not be taken as a co-wife to her paternal aunt or her maternal aunt."
Reference: Sunan an-Nasa'i 3295
In-book reference: Book 26, Hadith 100
English translation: Vol. 4, Book 26, Hadith 3297