"Ibn Umar said: "A man asked the Messenger of Allah ﷺ about prayer at night. He said: "Two by two, and if you fear that dawn will come, then one.'" (Using translation from Nasāʾī 1667)
سُئِلَ رَسُولُ اللهِ ﷺ عَنْ صَلَاةِ اللَّيْلِ فَقَالَ «مَثْنَى مَثْنَى فَإِذَا خَشِيتَ الصُّبْحَ فَوَاحِدَةً»