Is taking money from one's mother without her knowledge to collect a certain sum considered theft, and must it be returned?

The money taken through deceit and betrayal must be returned, as this act is forbidden due to both the lying and the taking of excess money. People's wealth is not permissible except with the owner's permission and contentment. This includes parents, as stealing from them is even more reprehensible due to the combination of disobedience and theft.

The questioner has also combined two other prohibited actions: giving a gift to this girl, and exchanging gifts between genders is not permissible if there is suspicion and fear of temptation. The second prohibited action is the occasion for which the gift is intended, as birthdays have no basis in our religion.

We advise the questioner to repent to Allah Almighty, to adhere to His religion, and not to negate the effect of his prayers and fasting by stealing his mother's money and associating with girls. He should also strive for righteous companionship that will help him preserve his identity and steadfastness in his religion.