The duration of the hour on Friday when hastening to it?
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Question : May Allah reward you, Honorable Shaykh, and benefit us with your knowledge. The questioner asks: What is the duration of the hour mentioned in the hadith regarding the virtue of hastening to the Friday prayer?
Answer : Yes, the duration of the hour, as the Prophet (peace and blessings be upon him) estimated it, is what he mentioned regarding the hour? Five. Divide the time from the rising of the sun to the arrival of the imam by five. This hour may be an hour according to the definition, it may be more, and it may be less. So, in the days of winter, the time between the rising of the sun and the arrival of the imam is long or short, long or short, short if the hours are short. And in the days of summer and the length of the day, the time between the rising of the sun and the arrival of the imam is long, so the hours become longer.
Answer : Yes, the duration of the hour, as the Prophet (peace and blessings be upon him) estimated it, is what he mentioned regarding the hour? Five. Divide the time from the rising of the sun to the arrival of the imam by five. This hour may be an hour according to the definition, it may be more, and it may be less. So, in the days of winter, the time between the rising of the sun and the arrival of the imam is long or short, long or short, short if the hours are short. And in the days of summer and the length of the day, the time between the rising of the sun and the arrival of the imam is long, so the hours become longer.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، لقاء[7 من 25] مقدار الساعة يوم الجمعة عند التبكير لها؟!! الشيخ ابن عثيمين - مشروع كبار العلماء — youtube.com (0:09)
The Arabic text is a machine transcription of the audio recording.