The right that children owe to their parents is great, and being dutiful to them in Islam is among the greatest means of drawing closer to Allah, as Allah has made dutifulness to them one of the broadest ways of reaching Paradise. Allah has also made not obeying them among the major sins and misdeeds that lead their perpetrators to disgracing punishment. In this Hadīth, the Prophet (may Allah's peace and blessings be upon him) clarifies that the child, whether male or female, cannot repay his father - the mother is included and so are the grandparents who are the same as the parents - and fulfill his right in full for his kindness towards him except when he finds his father a slave, buys him with his own money, and emancipates him and sets him free. In other words, the son seeks to reach him by buying him, and it is well known that he only buys him to free him from slavery, not to have him as his own slave or to be the master of his father. So, nothing fulfills the father's right over his son, no matter what the son does, except this act. This is because Islam came when slavery and serfdom were widespread and a common habit of the Arabs, and there were bondmaids and slaves in every house. It was said: If a man took possession of his father, the latter would be free by mere possession and [there is] no need to say: I set him free. Similarly, if he took possession of his mother, she would be free by mere possession and [there is] no need to say: I set her free. The Hadīth encourages children to be dutiful and kind to their parents. It also denotes the merit of emancipating slaves..