وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ لاَ رَضَاعَةَ إِلاَّ لِمَنْ أُرْضِعَ فِي الصِّغَرِ وَلاَ رَضَاعَةَ لِكَبِيرٍ ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umarsaid, "There is no kinship by suckling except for a person who isnursed when he is small. There is no kinship by suckling over the ageof two years." Translation Not Available

Book reference: Muwatta Imam Malik Book 30 Hadith 1280
Web reference: Muwatta Imam Malik Book 30 Hadith 6