Ata bin Abi Rabah (may Allah have mercy on him) said: A man said to his wife: 'Habluki ala gharibiki' (your rope is on your withers). He said these words repeatedly, then came to Sayyiduna Umar (may Allah be pleased with him). He asked him to take an oath between the Corner (al-Rukn) and the Station of Ibrahim: What did you intend by this saying? He said: I intended divorce. So Sayyiduna Umar (may Allah be pleased with him) separated the two of them.
The Shaykh said: He asked him for the oath only for confirmation, so that he would acknowledge that he had intended divorce each time; then he separated the two of them.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الخلع والطلاق / 15012