(49) باب مَا يَحْرُمُ مِنَ الرَّضَاعِ .
It was narrated from 'Aishah that the Prophet said:
"What becomes unlawful (for marriage) through breast-feeding is that which becomes unlawful through lineage."
Reference: Sunan an-Nasa'i 3302
In-book reference: Book 26, Hadith 107
English translation: Vol. 4, Book 26, Hadith 3304