We said to him ('Abdullah b. 'Umar): May Allah do good to you, these are desert Arabs and they are satisfied even with meagre (things). Thereupon Abdullah said: His father was loved dearly by 'Umar b. Khattib and I heard Messenger of Allah ﷺ as saying: The finest act of goodness on the part of a son is to treat kindly the loved ones of his father. (Using translation from Muslim 2552a)   

أَنَّ رَجُلًا مِنَ الْأَعْرَابِ لَقِيَهُ بِطَرِيقِ مَكَّةَ فَسَلَّمَ عَلَيْهِ عَبْدُ اللهِ وَحَمَلَهُ عَلَى حِمَارٍ كَانَ يَرْكَبُهُ وَأَعْطَاهُ عِمَامَةً كَانَتْ عَلَى رَأْسِهِ فَقَالَ ابْنُ دِينَارٍ فَقُلْنَا لَهُ أَصْلَحَكَ اللهُ إِنَّهُمُ الْأَعَرَابُ وَهُمْ يَرْضَوْنَ بِالْيَسِيرِ فَقَالَ عَبْدُ اللهِ إِنَّ أَبَا هَذَا كَانَ وَادًّا لِعُمَرَ بْنِ الْخَطَّابِ ؓ وَإِنِّي سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ إِنَّ أَبَرَّ الْبِرِّ صِلَةُ الْوَلَدِ أَهْلَ وُدِّ أَبِيهِ