What is the share of a deceased brother after his father's death and before the division of his estate, and to whom does his estate devolve after his death: is it to his mother and maternal siblings only, or to all of his siblings?

The brother who passed away after his father inherits from the father's estate because he was alive at the time of the father's death, and his share then transfers to his own heirs. The method of distributing the estate is determined after accurately identifying all heirs. If the brother died leaving his mother, full brothers, and full sisters, then his share goes to them, to the exclusion of half-brothers and half-sisters (from the father's side) due to the presence of full brothers. Given the complexity and intricacy of inheritance matters, it is advisable to refer the issue to Sharia courts or consult scholars directly to ascertain the heirs, debts, bequests, and other rights, as these take precedence over the rights of the heirs.