The ruling on executing a father's bequest in the one-third share

Question:
May Allah reward you, Honorable Shaykh. This questioner says: My father passed away and he bequeathed one-third of his estate to acts of righteousness. He appointed my brother to oversee this, but my brother passed away after a period of time without executing it. His will was that the righteous one among his descendants should take charge of the one-third. The question is: Am I religiously obligated to execute this one-third, or is it optional? Please note that I am the only one of his sons remaining, and he has grandchildren from my brothers.

Answer:
As long as no one from his descendants remains except you, and you are qualified to carry out the bequest, it is incumbent upon you. It is incumbent upon you to carry out your father's bequest. Yes. Good. If you were to consult the judge, or consult the court, that would be better and more complete. Yes.