Sa'id bin Jubayr (may Allah have mercy on him) said: A man came to Abdullah bin Abbas (may Allah be pleased with them both) and said: I have divorced my wife a thousand times. He said: Take three and leave 997.
(b) Sa'id bin Jubayr (may Allah have mercy on him) narrates from Ibn Abbas (may Allah be pleased with them both) that he said to a man who had divorced his wife three times: She has become unlawful for you.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الخلع والطلاق / 14976