Alms Tax: Produce Not Liable for Zakat Again

Practical Laws of Islam as per the teachings of Ayatullah Sistani

Ruling 1890

Wheat, barley, dates, and raisins on which zakat has been given are not liable for zakat again even if they remain with a person for some years.

-Ayatullah Sistani, Practical Laws of Islam, Alms Tax (Zakat)