Is Zakat obligatory on an amount of 7,500 Libyan Dinars that has been held for a year and has not been utilized after being received as a first installment of a loan for building a house? And is Zakat obligatory on the price of land that was sold for the purpose of leveling another plot of land, and a year has passed since its sale, and what about the Zakat on the share of sisters who renounced their right to the land?

Zakat is obligatory on the borrowed amount if it reaches the nisab (minimum threshold) and a hawl (one lunar year) passes over it, provided the borrower has other surplus funds to cover the debt. However, if they do not have other funds, there is no zakat on it because debt prevents zakat on hidden wealth. Zakat is also obligatory on the proceeds from the sale of land if a hawl passes over them and they reach the nisab.

Regarding the issue of sisters waiving their share of the land, for the waiver to be valid, the person waiving must be an adult of sound judgment. If the waiver is due to fear of defamation or reprimand, then it is not valid because it is not given willingly and involves coercion.