Does the amount of money the deceased allocated for burial expenses, which the son then paid from his own money, go back to the son or to the heirs after it is found?

The fundamental principle is that the expenses for preparing the deceased are covered by their wealth, if they possessed any. From the estate of the deceased, a right attached to a specific asset is disbursed first, followed by the reasonable expenses for their preparation. Therefore, the wealth left by the woman should first compensate what was spent on her preparation, unless the son voluntarily donated what he spent on the burial expenses. In that case, it is considered an inheritance in which all heirs have an equal share.