Calculating the duration of ila' including the days of menstruation

The questioner : All right, and by Allah, he will not have intercourse with his wife until the month of Muharram of the year 1409.

The Shaykh : How much time is left until Muharram? Five months, right? All right, Sha'ban, Ramadan, Shawwal, Dhu al-Qa'dah, and Dhu al-Hijjah make five, plus the remainder of this month. If this man is one who has sworn an oath of abstinence (muli), this muli is given four months. They tell you four months. If you retract your oath of abstinence and have intercourse with your wife, you expiate your oath, and there is no problem. If you refuse, then when the time period is completed, we tell you: divorce her, either take her back or divorce her. All right, he said, "People, my wife menstruates for ten days a month." I have one hundred and twenty days left. He has one hundred and twenty days left. Or is that not correct? No, that is a mistake. I have forty days left. He said, "My wife menstruates for ten days a month, and how many months does he have?"
Four months, meaning he is given four months. Allah the Exalted said: "Indeed, those who swear to abstain from their wives will be given a respite of four months." The four months are completed. He said, "By Allah, people, my wife menstruates for ten days a month." This means he is now asking for forty days.
We say we do not count them, meaning the days of menstruation are not dropped. We do not drop the days of menstruation; rather, they are counted against you.