وَقُل رَّبِّ ٱرْحَمْهُمَا كَمَا رَبَّيَانِى صَغِيرًۭا
Wa qul rabbir-hamhuma kama rabbayani saghira
Say: My Lord! Have mercy on them both as they did care for me when I was little.
The verse begins by telling us to lower to our parents the wing of humility out of mercy, and then to pray these words for them.