Conditions of Wills
The testator must be a person who is qualified to make a donation, by being an adult of sound mind. There are, however, two exceptions: a young testator who makes a will regarding his own funeral and burial, as long as this is within what is reasonable, and a weak-minded person making a will for charitable purposes, such as teaching the Qur’an or building a hospital.
The beneficiary of one’s will must not be an heir of the testator. If the beneficiary kills the testator, the will is rendered invalid.