As for knowledge, its opposite is ignorance; if a person consumes one of these things that break the fast while ignorant, his fast is valid.
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As for knowledge, its opposite is ignorance; if a person consumes one of these things that break the fast while ignorant, his fast is valid. For example, if he eats thinking that the dawn has not yet appeared, but it turns out that it has, the fast is valid. Or if the sky is cloudy and he thinks the sun has set, so he eats, but then the sun appears, the fast is valid.The evidence for this: The saying of Allah, Blessed and Exalted is He: [al-Baqarah: 286] So Allah said: I have done so.
And there is no doubt that he is mistaken; because we know that if he had known that the day was still remaining, he would not have eaten or drunk.
And another piece of evidence on the same subject: What al-Bukhari narrated from Asma bint Abi Bakr (may Allah be pleased with them both), who said: "We broke our fast on a cloudy day in the time of the Prophet (peace and blessings be upon him)" and they were not ordered to make it up. If the Companions, in the time of the Prophet (peace and blessings be upon him), broke their fast on a cloudy day thinking that the sun had set, and then it turned out that it had not set, and he did not order them to make it up, then it is known that there is no obligation to make up the fast for a person who is ignorant.
Our Lord, do not impose blame upon us if we have forgotten or erred.
رَبَّنَا لا تُؤَاخِذْنَا إِنْ نَسِينَا أَوْ أَخْطَأْنَاAnd there is no doubt that he is mistaken; because we know that if he had known that the day was still remaining, he would not have eaten or drunk.
And another piece of evidence on the same subject: What al-Bukhari narrated from Asma bint Abi Bakr (may Allah be pleased with them both), who said: "We broke our fast on a cloudy day in the time of the Prophet (peace and blessings be upon him)" and they were not ordered to make it up. If the Companions, in the time of the Prophet (peace and blessings be upon him), broke their fast on a cloudy day thinking that the sun had set, and then it turned out that it had not set, and he did not order them to make it up, then it is known that there is no obligation to make up the fast for a person who is ignorant.