Abu Said Al-Khudri (RAA) narrated that The Messenger of Allah (ﷺ) said:
"There is no Zakah to be paid on any amount of dates or grain less than five Awsuq." Agreed upon. (ES)
English reference (ES): Book 4, Hadith 636 (ES)
Arabic reference (ES): Book 4, Hadith 613 (ES)