رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1063
The Book of Virtues
The Excellence of waiting for As-Salat (The Prayer)
وَعَنْ أَنَسٍ رَضِيَ اَللَّهُ عَنْهُ أَنَّ رَسُولَ اَللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ أَخَّرَ لَيْلَةً صَلاَةَ الْعِشَاءِ إِلَى شَطْرِ اللَّيْلِ ثُمَّ أَقْبَلَ عَلَيْنَا بِوَجْهِهِ بعدما صَلَّى فَقَالَ: صَلَّى النَّاسُ وَرَقَدُوا وَلَمْ تَزَالُوا فِي صَلاَةٍ مُنْذُ انْتَظَرْتُمُوهَا ((رَوَاهُ الْبُخَارِيّ))
Anas (May Allah be pleased with him) reported: Once the Messenger of Allah (ﷺ) delayed the night prayer ('Isha') till midnight. He (ﷺ) turned to us after Salat (prayer) and said, "The people slept after performing their Salat, but you who waited, will be accounted as engaged in Salat throughout the period of your waiting." [Al-Bukhari].
Riyad as-Salihin, 1063