(49) باب مَا يَحْرُمُ مِنَ الرَّضَاعِ .
It was narrated that 'Amrah said:
"I heard 'Aishah say: The Messenger of Allah said: 'What becomes unlawful (for marriage) through breast-feeding is that which becomes unlawful through birth.'"
Reference: Sunan an-Nasa'i 3303
In-book reference: Book 26, Hadith 108
English translation: Vol. 4, Book 26, Hadith 3305