And it is necessary as a precaution...
And it is necessary as a precaution, that the executor of a Muslim should be a Muslim. To appoint a Na-baligh child alone for putting the Will into effect, is not in order, if the said child is expected to exercise discretion without permission of the guardian. But if the child is directed to put the Will into effect after having become baligh, or with the permission of the guardian, there will be no objection.
Issue 2714: * If a person appoints more than one executors, allowing each of them to execute the Will independently, it will not be necessary that they should obtain permission from one another for the execution of the Will. And if he had not given any such permission - whether he had or had not said that both of them should execute the Will jointly, they should execute the Will in consultation with one another.
And if they are not prepared to execute the Will jointly, and this unwillingness is not occasioned by any religious scruple, the Mujtahid can force them to do so, and if they do not obey his orders, or any one has a religious excuse for not being prepared to act jointly, then the Mujtahid can replace the dissenting executor.
Issue 2715: If a person retracts a directive in his Will, for example, if he first says that 1/3 of his property should be given to a person, and then says that it should not be given to him, the Will becomes void. And if he changes his Will, for example, if he appoints an administrator for his children, and then replaces him with another person, his first Will becomes void, and his second Will should be acted upon.
Issue 2716: * If a person conducts himself in a manner which shows that he has drawn back from his Will, for example, if he sells a house which he had willed to give away to someone, or appoints someone as his agent to sell it in spite of his original wish, the Will becomes void.
Issue 2717: If a person makes a Will that a particular thing be given away to someone, and later changes it to say that half of the same thing should be given to another person, that thing should be divided into two parts, and one part should be given to each of them.