Do the divorced woman and her children deserve social security benefits if their source is Zakat funds, given that the children's father is negligent in providing for them and her own father is spending on them?

The maintenance of children is obligatory upon the father by scholarly consensus, encompassing housing, food, drink, clothing, and education. Its amount is determined equitably, taking into consideration the husband's financial situation. If the father fails to provide maintenance or is deficient in it, it is permissible for the children to receive zakat (definition). If you do not have money, your father is obligated to spend on you, and if his wealth is insufficient for that, it is permissible for you to receive zakat. The pension (ma'ash) can either be taken for the children and belong to them, or it can be taken for them and for you if your father is unable to provide for your maintenance. If the children and the mother are adequately provided for by the father's and your father's maintenance, then it is obligatory to refrain from taking the pension if it is from zakat. However, if the pension is from state funds, there is no harm in taking it. It is necessary to ascertain the source of the pension, whether it is from zakat or from state funds.