Are your parents living? He said: Yes. Thereupon he (the Holy Prophet) said: You should put in your best efforts (in their) service. (Using translation from Muslim 2549a)
جَاءَ رَجُلٌ يَسْتَأْذِنُ النَّبِيَّ ﷺ فِي الْجِهَادِ فَقَالَ لَهُ النَّبِيُّ ﷺ أَحَيٌّ وَالِدَاكَ؟ قَالَ نَعَمْ قَالَ فَفِيهِمَا فَجَاهِدْ