Mu'awiyah bin Ishaq (may Allah have mercy on him) says that a man came to the Messenger of Allah (peace and blessings be upon him) and said: So-and-so accepted Islam at my hands. He (peace and blessings be upon him) said: "He is your mawla; when you are dying, make a bequest for him."
This is mursal, and it supports the statement of Ibn Abbas about the abrogation of the verse of pledges as regards inheritance; but he makes a bequest for him and treats him kindly, and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الولاء / 21454