رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1176
The Book of Virtues
Excellence of Standing in Prayer at Night
وَعَنْ جَابِرٍ رَضِيَ اللَّهُ عَنْهُ قَالَ: سُئِلَ رَسُولُ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ : أي الصَّلاَةِ أَفْضَلُ؟ قَالَ: طُولُ الْقُنُوتِ ((رَوَاهُ مُسْلِم)).
Jabir (May Allah be pleased with him) reported: The Messenger of Allah (ﷺ) was asked: "Which Salat is the best?" He replied, " The best Salat is that in which Qiyam (the duration of standing) is longer." [Muslim].
Riyad as-Salihin, 1176