Sahih Al Bukhari Hadith Number 1447

Narrated Abu Sa`id Al-Khudri: Allah’s Messenger (peace be upon him) said, “There is no Zakat on less than five camels and also there is no Zakat on less than five Awaq (of silver). (5 Awaq = 22 Fransa Riyals of Yemen or 200 Dirhams.) And there is no Zakat on less than five Awsuq. (A special measure of food-grains, and one Wasq equals 60 Sa’s.) (For gold 20, Dinars i.e. equal to 12 Guinea English. No Zakat for less than 12 Guinea (English) of gold or for silver less than 22 Fransa Riyals of Yemen.)

Narrated Abi Sa`id Al-Khudri:

I heard the Prophet (peace be upon him) saying (as above).

24  Obligatory Charity Tax (Zakat)
Hadith number 1447
Volume no 2
Chapter: 32 (The Zakat of silver)