The Companions (may Allah be pleased with them) used to ask the Messenger of Allah (may Allah's peace and blessings be upon him) for Fatwas on many of their acts of worship and dealings, and he would give them Fatwas and clarify the right aspects to them. In this Hadīth, Buraydah ibn al-Husayb al-Aslami (may Allah be pleased with him) relates that as he was sitting with the Messenger of Allah (may Allah's peace and blessings be upon him) one day, a woman came to him and told him that she gave a maidservant - a female slave - as charity to her mother during her lifetime, and she transferred her to her ownership through this charity. Then, her mother died and left behind this maidservant as part of her overall wealth, and her sole inheritor was her daughter. So, does she have the right to take the maidservant back to her ownership through inheritance, or not? So, the Prophet (may Allah's peace and blessings be upon him) said to her: "Your reward became due," i.e., your reward is established with Allah by upholding the ties with your mother and giving charity to her, and the maidservant was brought back to you by the inheritance from your mother, a reason in which you have no part. So, this does not detract from the reward for charity, and it is not regarded as retracting the charity or gift, because this is not optional. Then, the questioner said that a month of fasting was due on her mother - and in a version: "two months" - and asked whether she could fast on her behalf. He did not point out whether this was the fasting of Ramadan, a vow, or an expiation. Thereupon, the Prophet (may Allah's peace and blessings be upon him) said to her: "Fast on her behalf," i.e., make up for the days missed by your mother on her behalf, for this is a debt due upon her, and the debt of Allah is more worthy of being repaid. According to a version in the Two Sahīh Collections, the Prophet (may Allah's peace and blessings be upon him) likened the fasting due on a deceased person to a debt, which is payable, for this is a right to human beings; whereas the due fasting - be it related to Ramadan, a vow, or an expiation - is a right to Allah Almighty. So, the fulfillment of Allah's right is more significant and worthy than the fulfillment of the right of human beings; indeed, Allah is more entitled to repayment, as related in some versions by Al-Bukhāri. And in a Hadīth in the Two Sahīh Collections, ‘Ā’ishah (may Allah be pleased with her) reported that the Messenger of Allah (may Allah's peace and blessings be upon him) said: "Whoever dies while some fast is still due on him, his heir should fast on his behalf." Heirs here refer to male relatives, such as fathers and sons. If the heir does not observe the missed fast on his behalf, he may feed one poor person in return for each day of a missed fast. Thus, this obligation ceases to be due on the deceased person. The observance of this missed fast by the heir is tantamount to the deceased person himself making up for this fast. This applies in case the deceased person was able to observe the fast or make up for it, yet he did not do that. As for someone who dies before being able to make up for the missed fast - like a person who remains ill until he dies - there is nothing due on him, and their heirs should not observe the missed fast, or feed poor people, on his behalf. Then, the woman informed him that her mother died while she had never performed Hajj. This seems to indicate that she was able to perform Hajj, and so it was due on her. This is because Hajj ceases to be due on anyone who is not able to perform it. But she did not perform Hajj. So, is it valid to perform Hajj on her behalf? The Prophet (may Allah's peace and blessings be upon him) said to her: "Perform Hajj on her behalf." Perhaps it can be understood from the Prophet's permission to her to perform Hajj on behalf of her mother that the woman had already performed Hajj for herself and then she wanted to perform Hajj on behalf of her mother, based on a Hadīth narrated by Abu Dāwūd, in which Ibn ‘Abbās (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) heard a man say: "Labbayk on behalf of Shubrumah." He said: "Who is Shubrumah?" He said: "A brother of mine," or "a relative of mine." He said: "Did you perform Hajj for yourself?" He said: 'No.' Thereupon, he said: "Perform Hajj for yourself and then perform Hajj on behalf of Shubrumah." And in the Sahīh Collection of Ibn Khuzaymah: "This is for you, and then perform Hajj on behalf of Shubrumah." If Hajj becomes due on someone and he dies before performing it, and then someone else performs Hajj on his behalf, he is absolved of this obligation. It is likely in light of the bounty and grace of Allah that if an heir performs Hajj on behalf of a deceased person, Allah will forgive the deceased person by virtue of that, give him a reward for it, or not punish him for his negligence. The Hadīth indicates that if a person gives something in charity and then inherits it, he has the right to take and dispose of it, without his reward diminishing because of that. It points out that fasting can be observed on behalf of a deceased person. It also demonstrates that Hajj can be performed on behalf of a deceased person. The Hadīth indicates that a person can show kindness to his parents by fulfilling their vows and debts..