Is it taken into consideration when paying Zakat that the wealth reached the Nisab on Ashura of last year, despite doubts about it? And are borrowed funds included in the Zakat Nisab? And is Zakat paid on the determined Nisab or on the entire amount currently owned, including borrowed funds? And is it necessary to verify that the Nisab has been reached before paying Zakat on Ashura?

Zakat is obligatory on wealth under two conditions: the wealth reaching the nisab (minimum threshold) and the nisab remaining for a full Hijri year. The nisab for money is equivalent to 85 grams of gold or 595 grams of silver. If a person doubts whether Zakat is obligatory, then it is not obligatory, because the default is the exoneration of one's liability. Zakat is obligatory on money lent to others, because it does not cease to be owned by the lender. It is paid upon its retrieval for all previous years if it was a deferred loan.