Mishkat al-Masabih
Mishkat al-Masabih 423
Arabic hadith text
وَعَنْ عَبْدِ اللَّهِ بْنِ زَيْدٍ قَالَ: إِنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ تَوَضَّأ مَرَّتَيْنِ مَرَّتَيْنِ وَقَالَ: هُوَ «نُورٌ عَلَى نُورٍ»
Translation
ʿAbd Allāh ibn Zayd said: ‘The Messenger of Allah performed ablution, washing each part twice, and said: “It is light upon light.”’