Ikrimah narrates from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that a man came to the Prophet (peace and blessings be upon him) who had made zihar from his wife and then had intercourse with her. He said: "O Messenger of Allah (peace and blessings be upon him), I made zihar from my wife, but I had intercourse with her before paying the expiation." He (peace and blessings be upon him) said: "May Allah have mercy on you, what led you to this?" He said: "I saw her anklet in the moonlight." He (peace and blessings be upon him) said: "Do not go near her until you have fulfilled Allah's command."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الظهار / 15259