The Ruling on Consecutive Fasting for One Who Vows to Fast a Month

Question:
Honorable Shaykh, if someone makes a vow to fast for a month, is it obligatory for him to do so consecutively? And is the month determined by the sighting of the new moon, or does he fast for thirty days?

Answer:
If we see that he fasts for a month and he specified it, then it is obligatory for him to fast consecutively, because a month implies consecutiveness; a month is not established except by the book, meaning, however, that he is not required to fast a specific month. Every month is a single book; he must fast it in full, unless he intended the number consecutively, intending it by the number, because a month, if intended by number, means the number of a month. But if he specified it, then he must fulfill the mention. Yes. Unless he intended it to be scattered. Yes.