Bulugh al-MaramChapter 2Hadith 481
Full Sharh — Bulugh al-Maram 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).
English Translation
Narrated :: 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." .
Source
Bulugh al-Maram(بلوغ المرام)
The Book of Prayer
Hadith Number
481