وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، أَنَّ عَبْدَ اللَّهِ بْنَ عُمَرَ، كَانَ يَقُولُ ‏:‏ لاَ تَجِبُ فِي مَالٍ زَكَاةٌ حَتَّى يَحُولَ عَلَيْهِ الْحَوْلُ ‏.‏

Yahya related to me from Malik from Nafi that Abdullah ibn Umarused to say, "Zakat does not have to be paid on property until a yearhas elapsed over it." Translation Not Available

Book reference: Muwatta Imam Malik Book 17 Hadith 586
Web reference: Muwatta Imam Malik Book 17 Hadith 6