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. (FR)
English reference (FR): Book 4, Hadith 636 (FR)
Arabic reference (FR): Book 4, Hadith 613 (FR)