A man who does not know when the lunar year of possession has completed for his wealth: how does he pay zakah on his wealth?

The questioner : Does he pay out the zakah, O Shaykh? But, O Shaykh, he does not know the exact completion of the lunar year. That is, every month the wealth increases and decreases.

The Shaykh : He does not know when the nisab (minimum threshold for zakah) is completed?

The questioner : No, O Shaykh, I mean...

The Shaykh : Listen, do not say "no." He did not say "no" except in his tashahhud (testification recited while sitting in prayer). When he put the money in the bank, and Allah has turned the banks away from the Muslims, he does not know whether it has reached the nisab or not?

The questioner : Yes, O Shaykh, he knows, but, O Shaykh...

The Shaykh : May Allah guide you. Since he knows the amount of money he put in, and that it has reached the nisab or increased, let us assume he put it in at the beginning of Muharram, and whenever he has money available, he adds it to this money, correct?

The questioner : Yes.

The Shaykh : In the new year, he does not know what the total amount of the money has become?

The questioner : Yes, he knows.

The Shaykh : So, he pays out from the entire amount of the money.

The questioner : He pays out from the entire amount of the money.

The Shaykh : Did you understand the answer?

The questioner: May Allah will it.