Abdullah bin Ali bin Rukanah reports from his father, from his grandfather (Sayyiduna Rukanah, may Allah be pleased with him), that in the time of the Prophet (peace and blessings be upon him) he divorced his wife with 'al-battah' (irrevocably). He came to the Prophet (peace and blessings be upon him) and informed him. He (peace and blessings be upon him) asked: "What did you intend by it?" He said: One (divorce). He (peace and blessings be upon him) asked: "By Allah?" He said: Yes, by Allah! He (peace and blessings be upon him) said: "Then it is as you intended."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأيمان / 19906