"O Messenger of Allah, I declared Zihar on my wife, then I had intercourse with her before I offered the expiation." He said: "What made you do that, may Allah have mercy on you?" He said: "I saw her anklets in the light of the moon." He said: "Do not approach her until you have done that which Allah, the Mighty and Sublime, has commanded."
Sunan an-Nasa'i Book 27, Hadith 69
← Previous Hadith "The Prophet swore an oath of abstention from his wives for a month and stayed in his room for twenty-nine days. It was said: 'O Messenger of Allah, did you not swear an oath of abstention for a month?' He said: 'This month is twenty-nine days.'"

Sunan an-Nasa'i Book 27, Hadith 68 Next Hadith → "A man declared Zihar to his wife, then had intercourse with her before he had offered the expiation. He mentioned that to the Prophet. The Prophet said to him: 'What made you do that?' He said: 'May Allah have mercy on you, O Messenger of Allah. I saw her anklets, or her calves, in the light of the moon.' The Messenger of Allah said: 'Keep away from her until you have done that which Allah, the Mighty and Sublime, has commanded.'"

Sunan an-Nasa'i Book 27, Hadith 70