Abd al-Malik bin Qudamah bin Ibrahim bin Muhammad bin Hatib al-Jumahi narrates from his father that in the time of Sayyiduna Umar (may Allah be pleased with him) a man lowered himself down (on a rope) to collect honey. His wife came and stood over the rope and swore that she would cut it unless he gave her three divorces. He reminded her of Allah and of Islam, but she refused anything except that he give her three divorces, so he divorced her three times. When the man came back up, he came to Sayyiduna Umar (may Allah be pleased with him) and mentioned what had happened to him. Sayyiduna Umar (may Allah be pleased with him) said: "Go back to your family, that is, to your wife; this is not a divorce."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الخلع والطلاق / 15099