وَقَضَىٰ رَبُّكَ أَلَّا تَعْبُدُوا إِلَّا إِيَّاهُ وَبِالْوَالِدَيْنِ إِحْسَانًا ۚ إِمَّا يَبْلُغَنَّ عِندَكَ الْكِبَرَ أَحَدُهُمَا أَوْ كِلَاهُمَا فَلَا تَقُل لَّهُمَا أُفٍّ وَلَا تَنْهَرْهُمَا وَقُل لَّهُمَا قَوْلًا كَرِيمًا
Wa qada Rabbuka alla ta'budu illa iyyahu wa bil-walidayni ihsana. Imma yablughanna 'indakal-kibara ahaduhuma aw kilahuma fala taqul lahuma uffin wa la tanharhuma wa qul lahuma qawlan karima.
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 a word of disrespect and do not repel them but speak to them a noble word.
Virtue
Quranic verse directly linking obedience to Allah with good conduct toward aging parents. The Prophet ﷺ said that kindness to parents is among the most beloved deeds to Allah.
Tafsir
Allah places the command of kindness toward parents immediately after the command of exclusive worship. This verse insists on absolute respect for parents in their old age, forbidding even a simple sigh of impatience, and ordering noble and respectful words toward them.