Is keeping the night of the festival alive in the mosque part of the Sunnah?
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Question : He asks: Is keeping the night of the festival alive in the mosque part of the Sunnah?
Answer : It is not part of the Sunnah to keep the night of the festival alive in the mosques. However, there is a hadith, regarding whose authenticity there is doubt, that whoever keeps But the hadith is weak, and therefore it is not acted upon. As for keeping it alive in the mosques themselves, it is definitely a bid'ah (religious innovation).
Answer : It is not part of the Sunnah to keep the night of the festival alive in the mosques. However, there is a hadith, regarding whose authenticity there is doubt, that whoever keeps
The two nights of the festivals, may Allah keep his heart alive on the day when hearts die,
ليلتي العيدين أحيا الله قلبه يوم تموت القلوب،
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 44 - 45 - دروس وفتاوى المسجد الحرام للعام 1417 هـ - الدرس الرابع والأربعين - الشيخ ابن عثيمين — youtube.com (21:43)
The Arabic text is a machine transcription of the audio recording.