Adab al-Mufrad

Benefits and Issues:
➊ The closer a person is in relation, the greater the sin of severing ties with them. Disobedience to parents is a form of severing ties (qat‘ al-rahm) with them. If the punishment for severing ties with ordinary people is so severe, then how much greater will the punishment be for severing ties with one’s parents?
➋ The second sin for which punishment is received immediately is wrongdoing (zulm) against someone. In the hadith, the word (al-baghy) is used, which means to transgress the limits regarding something. The oppressor also transgresses his limits and tries to usurp someone’s right, honor, etc.
➌ There are several ways for sins to be forgiven, one of which is that a person is punished in this world, and thus is forgiven in the Hereafter. Allah, the Exalted, deals with His believing servants with such grace that the trials that befall them in this world become expiation (kaffarah) for their sins—even if a thorn pricks them, it becomes expiation for some sin. However, the hardship that comes as a result of severing ties of kinship (qat‘ al-rahm) neither becomes expiation for any sin nor does it avert any calamity in the Hereafter. The Messenger of Allah sallallahu alayhi wa sallam said:
((There is nothing in which Allah is obeyed that brings a swifter reward than maintaining ties of kinship (silat al-rahm), and there is nothing that brings a swifter punishment than oppression (baghy) and severing ties of kinship (qat‘ al-rahm). And a false oath leaves towns desolate.)) (Silsilat al-Ahadith al-Sahihah, Hadith: 978)
➃ In “rahm” (ties of kinship), all relatives—both those with whom marriage is forbidden (mahram) and those with whom it is not (non-mahram)—are included, and maintaining ties with all of them is obligatory by consensus, though the degree of obligation may vary according to closeness. The minimum form of maintaining ties is greeting, praying for, and speaking to them.
➄ Allah, the Exalted, will not even look with mercy upon the one who is disobedient to his parents.
➅ The statement of Sayyiduna ‘Umar ibn ‘Abd al-‘Aziz rahimahullah: He advised Ibn Mehran, saying: Do not go to the doors of kings, even if your purpose is enjoining good and forbidding evil (amr bil-ma‘ruf wa nahi ‘an al-munkar). Do not be alone with a non-mahram woman, even if your intention is to teach her the Qur’an. Do not befriend one who is disobedient to his parents, for whoever is disobedient to his parents cannot be your well-wisher. (Nazarat al-Na‘im, referencing al-Mustatraf: 10/5016)