What is the ruling on someone who made vows beyond her capability, namely: donating 25,0 riyals, slaughtering ten camels, and holding a large dinner banquet, but was unable to fulfill them except by fasting for two months?

A vow of obedience must be fulfilled. If you are unable to fulfill a vow of charity, an expiation for breaking an oath becomes obligatory upon you. As for vowing to slaughter camels and prepare a feast, this falls under vows concerning permissible acts. The preponderant opinion is that the one who makes such a vow has the choice either to fulfill it or to expiate for it with an expiation for breaking an oath. It is important to note the prohibition against vows made in anticipation of a reward.