The one who upholds ties of kinship is not the one who recompenses the good done to him by his relatives; rather, he is the one who keeps good relations with those relatives who had severed the bond of kinship with him. [Al-Bukhari]

"«ليس الواصل بالمُكَافِئِ ، ولكنَّ الواصل الذي إذا قَطعت رحِمه وصَلَها». [صحيح.] - [رواه البخاري.]"