Bulugh al-Maram
The Book of Prayer — Hadith #481
وَعَنْهُ قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ أَثْقَلُ اَلصَّلَاةِ عَلَى اَلْمُنَافِقِينَ: صَلَاةُ اَلْعِشَاءِ, وَصَلَاةُ اَلْفَجْرِ, وَلَوْ يَعْلَمُونَ مَا فِيهِمَا لَأَتَوْهُمَا وَلَوْ حَبْوًا } مُتَّفَقٌ عَلَيْه ِ 1 .1 - صحيح. رواه البخاري (657)، ومسلم (651).
Allah’s Messenger (ﷺ) said: “The most burdensome prayers for hypocrites are the ‘Isha’ and the Fajr prayers and if they knew what (rewards) these (prayers) contain, they would have come to them (in the mosques), even though they had to crawl on their knees.”
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