Is zakat obligatory on money endowed for marriage if it reaches the nisab, and what is the ruling on zakat for money deposited and lent if part of it is in hand and more than the nisab is lent to relatives from whom the repayment date is unknown?

Whoever owns money that reaches the threshold (nisab) for gold (85 grams) or silver (595 grams), and a full year (hawl) passes on it, zakat becomes obligatory on it, whether it was prepared for marriage or construction. One-quarter of one-tenth (2.5%) of the entire wealth (the principal and any increase generated from it) is to be paid. As for an increase not generated from the principal, its zakat is due when its own year passes, or it can be paid along with the principal for ease. Money lent to people requires zakat if the borrower is capable of repayment; it is then zakated along with the existing money. However, if the borrower is unable to pay or is procrastinating, the existing money is zakated annually, and the lent money is zakated upon its retrieval for one year, or for all the years it was not zakated.