رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1180
The Book of Virtues
Excellence of Standing in Prayer at Night
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا قَامَ مِنَ اللَّيْلِ افْتَتَحَ صَلاَتَهُ بِرَكْعَتَيْنِ خفيفتين ((رَوَاهُ مُسلم)).
'Aishah (May Allah be pleased with her) reported: Whenever the Messenger of Allah (ﷺ) stood for Salat at night, he would start his prayer with two brief Rak'ah. [Muslim].
Riyad as-Salihin, 1180