Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Bring me a quarter of the tenth." Then he narrated the whole hadith, and at its end he narrated: "There is no zakah on wealth until a year has passed over it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7273
Sayyidah Aishah (may Allah be pleased with her) said: I heard the Messenger of Allah (peace and blessings be upon him) say: "There is no zakah on any wealth until a full year has passed over it."
Abu Mu'awiyah, Huraym bin Sufyan and Abu Kudaynah likewise narrated it from Harithah as marfu' (from the Prophet), while al-Thawri narrated it from Harithah as mawquf (a statement of Aishah). Harithah's report is not used as evidence; the reliance in this matter is on the authentic reports from Abu Bakr al-Siddiq, Uthman bin Affan, Abdullah bin Umar and others (may Allah be pleased with them).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7274