Is it permissible to submit the name of the son who lives with his divorced mother to obtain purchase coupons from the organization, and am I obliged to send the coupons to him, or can I benefit from them myself?

The ruling on receiving coupons for a son who lives with his mother depends on the conditions set by the donating entity. If the entity does not stipulate that the children must be under the father's care to be eligible for the coupons, then there is no harm in taking them. It is permissible to send them to the son or to benefit from them personally, unless the entity stipulates that they must be spent directly on the children. Otherwise, their conditions must be followed, in accordance with the hadith: "Muslims are bound by their conditions." It is recommended to inquire with the granting entity as a precaution for one's religion and to clear one's conscience, and in light of the hadith: "Leave that which makes you doubt for that which does not make you doubt," and the hadith: "Consult your heart."