Is it permissible to count money saved for the poor and needy as part of zakat on wealth? And is it permissible to count money lent to a poor person as part of zakat on wealth, and what should be done if he repays it? And is a wife's money separate from her husband's money when giving zakat? And is zakat calculated on wealth after an increase, and does the Hawl (one year period) restart from the date of the increase or from the beginning of possessing the nisab? And is it permissible to dye a wife's hair black with the husband's approval?

Setting aside some money with the intention of giving it as charity does not remove it from your possession. It is to be included with your wealth for zakat (definition) if a year has passed on it. It is not permissible to waive a debt owed by a debtor and consider it part of zakat, for zakat is a right of Allah and is to be distributed to the deserving categories mentioned in the verse. A wife must pay zakat on her wealth, and she may appoint her husband to pay it on her behalf. The decrease of wealth during the hawl (zakat year) differs: if it falls below the nisab (definition) and then returns to it, the hawl is restarted. If it decreases but remains above the nisab, then zakat is due on the entire amount at the end of the hawl. Dyeing hair with colors other than black is permissible, and it is commendable for a woman to adorn herself in this way for her husband. The difference of opinion pertains to dyeing hair black.