Sayyiduna Ibn Abbas (may Allah be pleased with them both) says regarding "Say: I do not ask you for any reward for this except affection for kinship" [Surah al-Shura: 23]: "There was no clan among the clans of Quraysh with which he (peace and blessings be upon him) did not have a tie of birth or in which he (peace and blessings be upon him) did not have kinship. Say: I do not ask you for any reward for this, except that you protect me from harm because of my kinship with you and hold back your harm from me."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 12186