In one narration the words are: "Then it will be binding on him to have him freed completely, if that person has wealth."
Imam al-Tabarani recorded this narration, and the narrator Ishaq bin Yahya did not live in the time of Sayyiduna Ubadah (may Allah be pleased with him).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب العتق / 7293