رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1073
The Book of Virtues
Urging to Observe 'Isha' and Fajr Prayers in Congregation
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : لَيْسَ صَلَاةً أَثْقَلَ عَلَى المنافقين من صلاة الْفَجْرِ وَالْعِشَاءِ وَلَوْ يَعْلَمُونَ مَا فِيهِمَا لأَتَوْهُمَا وَلَوْ حَبْوًا ((مُتَّفَقٌ عَلَيْهِ)).
Abu Hurairah (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) said, "No Salat is more burdensome to the hypocrites than the Fajr (dawn) prayer and the 'Isha' (night) prayer; and if they knew their merits, they would come to them even if they had to crawl to do so." [Al-Bukhari and Muslim].
Riyad as-Salihin, 1073