(51) باب الْقَدْرِ الَّذِي يُحَرِّمُ مِنَ الرَّضَاعَةِ .
It was narrated from 'Abdullah bin Az-Zubair that the Prophet said:
"Suckling once or twice does not make (marriage) prohibited." (ID)
Reference (ID): Sunan an-Nasa'i 3309 (ID)
In-book reference (ID): Book 26, Hadith 114 (ID)
English translation (ID): Vol. 4, Book 26, Hadith 3311 (ID)