Answer: One does not fast, and this is explicit in the hadith. People, due to their habituation to certain customs, find it strange what they hear in the hadiths, and the authentic hadiths

The questioner : The Messenger of Allah (peace and blessings be upon him) forbade fasting on Saturday, but if a person fasts the six days of Shawwal or fasts three days of every month, and Saturday is one of these days, does he fast this day or not?

The Shaykh : The answer is that he does not fast, and this is explicit in the hadith. People, due to their habituation to certain customs, find it strange what they hear in the hadiths, and the authentic hadiths. Listen to the hadith and its explicitness, which is like an answer to a question like this: meaning the bark of a tree This is to practically demonstrate his agreement with the prohibition of the Messenger (peace be upon him) regarding fasting on Saturday, except in what Allah the Exalted has made obligatory upon them. Do not find it strange to apply this hadith to what came in this question. For example, fasting six days of Shawwal: if Saturday falls within the six days of Shawwal, this hadith of yours commands you to avoid it. An example that confirms to you that this matter is very clear, with no doubt or issue in it. And peace be upon you, welcome, please, be comfortable. All of you know the virtue of fasting on Monday and Thursday. Fasting on Monday and Thursday: if a Monday coincides with one of the four days of the great festival, 'Id al-Adha, or if the first day of 'Id al-Fitr is a Monday or a Thursday, do you fast it? Everyone will say no. Why? Because you know that the Messenger forbade fasting on the day of the festival, and this prohibition is general and includes all days of the week. Now the question comes here. I am saying this now from someone other than you, but just now the question came from you. Now the question may come from someone else: The day of the festival is Monday, do we fast it? We say no. He says, what is the evidence? We say, the Messenger forbade fasting on the day of the festival. He says, but Monday has a virtue. We say, yes, but there is a jurisprudential principle that says, "When a prohibitor and a permitter conflict, the prohibitor is given precedence over the permitter." The prohibitor means the forbidden, meaning the text that forbids a thing. There is a conflict between two texts, one encouraging its performance and the other forbidding its performance. What does the Muslim do in this case? The scholars established jurisprudential principles so that the Muslim would be clear in his religion. They said, when a prohibitor and a permitter conflict, the prohibitor is given precedence over the permitter. Here, Monday, fasting on Monday has its virtue, or fasting on Thursday, but this virtue is opposed by his (peace be upon him) prohibition of fasting on the day of the festival. If the day of the festival coincides with Monday or Thursday, the prohibitor is given precedence over the permitter, so it is not fasted. Likewise, the answer is exactly the same: Saturday comes on one of the days of the six days of Shawwal, what do we do? We skip it, because the Messenger forbade fasting on Saturday. But his prohibition of fasting on Saturday is stronger than his prohibition of fasting on the day of the festival. Why? Because after he forbade it, he said He said Thus, the voluntary fast is excluded. He did not say this explanation regarding fasting on Monday during the festival, for example. He did not say, "Even if there is a virtue for this day, the prohibition takes precedence over the virtue." But regarding fasting on Saturday.