In this video clip #MuftiMenk makes mentions of Allah has decreed that we will be kind to our parents from the Quran and important four things when they become old with dua. The Dua / Supplications is in the following:

Arabic: رَبِّ ارْحَمْهُمَا كَمَا رَبَّيَانِي صَغِيرًا

Transliteration: Rabbir hamhumaa kamaa rabbayaanee sagheera oh allah

Translation: O my Lord! have compassion on them, as they brought me up (when I was) little.