(This is) by way of deduction from the preceding evidence on the establishment of wala' for the one who frees, and on the basis that wala' has been likened to lineage; and some of our companions have argued on this point.
It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "I am closer to the believers than their own selves. Whoever dies and leaves wealth, it will be distributed among his 'asabah (i.e. his relatives), and whoever leaves a debt or helpless dependents (daya'), I am responsible for him."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الولاء / 21488