It is narrated from Hazrat Samurah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Whoever becomes the owner of any of his close relatives, then that relative becomes free.
Hadith Referenceمسند احمد / أول مسند البصريين / 20227
Hadith Gradingحکم دارالسلام:صحيح لغيره، وهذا إسناد ضعيف، الحسن