He died without leaving a bequest: Is a portion of his estate to be spent on good deeds?

Question: A man who had wealth and dependents, all of whose children were minors, the eldest being eight years old, died suddenly and did not bequeath anything from his wealth. It is known that if he had mentioned the bequest and its matter before his death, he would have made one. Should anything be taken from his wealth, or is it sufficient to perform acts of righteousness on his behalf, such as Hajj, 'Umrah, the 'Id sacrifice, and others? Please inform us.
Answer: The heirs are not required to give anything from his wealth on his behalf, but if they do, and they give him a specific undivided share, such as one-third, one-quarter, or the like, or they give a known amount of money to be given in charity on his behalf, or to buy real estate for him to be an endowment for the sake of Allah (Glorified and Exalted is He) , and its proceeds are spent on acts of righteousness and good deeds, then they will be rewarded for that, and this is part of being dutiful to their father.
However, this is only valid from those who are of sound mind. As for minors and adults who are not of sound mind, it is not permissible for their guardian to take anything from their share. And success is from Allah.