Ibn 'Abbas was asked about this Ayah: Say: "No reward do I ask of you for this except to be kind for my kinship with you (42:23)." So Sa'eed bin Jubair said: 'To be kind to the family of Muhammad.' Ibn 'Abbas replied: 'You know that there was no family of the Quraish except that the Messenger of Allah ﷺ had some relatives among them.' He said: 'Except that you should uphold ties of kinship that exist between me and you.'" (Using translation from Tirmidhī 3251)
عَنْ هَذِهِ الْآيَةِ؟ {قُلْ لَا أَسْأَلُكُمْ عَلَيْهِ أَجْرًا إِلا الْمَوَدَّةَ فِي الْقُرْبَى} [الشورى 23] قَالَ فَقَالَ سَعِيدُ بْنُ جُبَيْرٍ قُرْبَى آلِ مُحَمَّدٍ قَالَ فَقَالَ ابْنُ عَبَّاسٍ عَجِلْتَ إِنَّ رَسُولَ اللهِ ﷺ لَمْ يَكُنْ مِنْ بُطُونِ قُرَيْشٍ إِلا كَانَ لَهُ فِيهِمْ قَرَابَةٌ فَقَالَ إِلا أَنْ تَصِلُوا مَا بَيْنِي وَبَيْنَكُمْ مِنَ القَرَابَةِ