Is it permissible to favor young girls in giving by granting them the value of the bridal trousseau without the males, when helping children marry and preparing the eldest daughter, knowing that the father intends to give all his children the same amount equally?

According to some jurists, marrying off children is a part of the obligatory maintenance (nafaqa) as long as the child is unable to marry. It is not necessary to give someone who does not need marriage the same amount as was spent on someone who does. As for the expenses of marrying off daughters, they are not obligatory upon the father but rather upon the husband. However, the father should assist her if custom dictates it. Preparing daughters for marriage is closer to the category of gifts and endowments (hibat and ataya) rather than obligatory maintenance. If the father spends anything on his daughter's marriage, it is considered a gift due to her need, and need is one of the justifications for preferential treatment.