Is it true that whoever performs Umrah with the intention of being blessed with a child, and is indeed blessed with one, will not have the reward for their Umrah counted because they sought a worldly gain? What is the criterion for self-interest that diminishes or nullifies the reward? And does everyone who performs an act of worship for a worldly benefit have the reward for their deed reduced, and is it then not considered sincere?

Performing acts of worship for a worldly purpose without regard for the reward in the hereafter, such as fasting and prayer, is considered an act for this world, which renders the doer's deeds null and causes them loss in the hereafter. As Allah Almighty says: {Whoever desires the life of this world and its adornments - We fully repay them for their deeds therein, and they therein will not be deprived. Those are the ones for whom there is nothing in the Hereafter but the Fire. And lost is what they did therein, and worthless is what they used to do.} As for deeds for which the Lawgiver has stipulated a worldly reward, such as maintaining ties of kinship, if both the worldly and otherworldly rewards are simultaneously intended, there is no harm in that. However, if the intention is solely for this world, the doer may not be rewarded. The most preponderant opinion is that the decisive factor is what dominates the intention.