What is the virtue of honoring one’s parents? What is the extent of Islamic law’s emphasis on honoring parents both during their lifetime and after their death?

Islam seeks to instill in people every virtue and eliminate every vice. Among these virtues is dutifulness to parents. Parents are the cause of their children’s existence and the primary source of every virtue their children acquire, from religious values to good character. Allah Almighty and His Messenger (peace and blessings be upon him) have enjoined honoring one’s parents and treating them with the utmost care and consideration in several instances, including: “And your Lord has decreed that you not worship except Him, and to parents, good treatment. Whether one or both of them reach old age [while] with you, say not to them [so much as], "uff," and do not repel them but speak to them a noble word. And lower to them the wing of humility out of mercy and say, "My Lord, have mercy upon them as they brought me up [when I was] small" (Quran, 17:23-24).

Allah Almighty has even bracketed dutifulness to one’s parents with worshipping Him, and undutifulness to them with associating partners with Him, “Worship Allah and associate nothing with Him, and to parents do good” (Quran, 4:36). He has also placed gratitude to them alongside gratitude to Him; He says, “Be grateful to Me and to your parents” (Quran, 31:14). Allah Almighty further emphasizes this, even when parents command their child to associate partners with Him, “But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness” (Quran, 31:15). When Allah praises Yahya (peace be upon him), He said, “And dutiful to his parents, and he was not a disobedient tyrant” (Quran, 19:14). Abu Huraira (may Allah be pleased with him) narrated that the Messenger of Allah (peace and blessings be upon him) said, “May he be disgraced! May he be disgraced! May he be disgraced!” When asked who, he replied, “The one whose parents, one or both of them, reach old age during his lifetime and he does not enter Paradise [by serving them]” (recorded by Muslim in his Sahih). Islam commands obedience to one’s parents except when they command disobedience to Allah. Allah Almighty says, “But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness” (Quran, 31:15).

The command to be dutiful to one’s parents mentioned in the Quran is unconditional, applying under all circumstances, at all times, and during their lifetime. If one falls short in honoring one’s parents while they are alive, the least one can do is honor them after their death. Abu Usaid Malik ibn Rabi’a al-Sa’diy (may Allah be pleased with him) said, “While we were with the Messenger of Allah (peace and blessings be upon him), a man from Banu Salama came to him and said, ‘O Messenger of Allah, is there anything of dutifulness toward my parents that remains for me to do after their death?’ He replied, ‘Yes, praying for them, seeking forgiveness for them, fulfilling their commitments after their death, maintaining ties of kinship that cannot be maintained except through them, and honoring their friends” (recorded by Abu Dawud in his Sunan).

And Allah Almighty knows best.