(6) باب التَّحْرِيمِ بِخَمْسِ رَضَعَاتٍ
'Amra reported that she heard 'A'isha (Allah he pleased with her) discussing fosterage which (makes marriage) unlawful; and she ('A'isha) said:
There was revealed in the Holy Qur'an ten clear sucklings, and then five clear (sucklings).
Reference: Sahih Muslim 1452 b
In-book reference: Book 17, Hadith 31
USC-MSA web (English) reference(deprecated numbering scheme): Book 8, Hadith 3422