One night I slept at the house of Maimuna. The Prophet ﷺ woke up, answered the call of nature, washed his face and hands, and then slept. He got up (late at night), went to a water skin, opened the mouth thereof and performed ablution not using much water, yet he washed all the parts properly and then offered the prayer. I got up and straightened my back in order that the Prophet ﷺ might not feel that I was watching him, and then I performed the ablution, and when he got up to offer the prayer, I stood on his left. He caught hold of my ear and brought me over to his right side. He offered thirteen rakʿat in all and then lay down and slept till he started blowing out his breath as he used to do when he slept. In the meantime Bilal informed the Prophet ﷺ of the approaching time for the (Fajr) prayer, and the Prophet offered the Fajr (Morning) prayer without performing new ablution. He used to say in his invocation, Allahumma ijʿal fi qalbi nuran wa fi basari nuran, wa fi samʿi nuran, waʿan yamini nuran, waʿan yasari nuran, wa fawqi nuran, wa tahti nuran, wa amami nuran, wa khalfi nuran, wajʿal li nuran." Kuraib (a sub narrator) said, "I have forgotten seven other words, (which the Prophet ﷺ mentioned in this invocation). I met a man from the offspring of Al-ʿAbbas and he narrated those seven things to me, mentioning, '(Let there be light in) my nerves, my flesh, my blood, my hair and my body,' and he also mentioned two other things." (Using translation from Bukhārī 6316)
بِتُّ عِنْدَ خَالَتِي مَيْمُونَةَ فَقَامَ رَسُولُ اللهِ ﷺ مِنَ اللَّيْلِ فَأَتَى حَاجَتَهُ ثُمَّ غَسَلَ وَجْهَهُ وَيَدَيْهِ ثُمَّ نَامَ ثُمَّ قَامَ فَأَتَى الْقِرْبَةَ فَأَطْلَقَ شِنَاقَهَا ثُمَّ تَوَضَّأَ وُضُوءًا بَيْنَ الْوُضُوءَيْنِ لَمْ يُكْثِرْ وَقَدْ أَبْلَغَ ثُمَّ قَامَ فَصَلَّى فَقُمْتُ فَتَوَضَّأْتُ فَقَامَ يُصَلِّي فَقُمْتُ عَنْ يَسَارِهِ فَأَخَذَ بِأُذُنِي فَأَدَارَنِي عَنْ يَمِينِهِ فَتَتَامَّتْ صَلَاةُ رَسُولِ اللهِ ﷺ ثَلَاثَ عَشْرَةَ رَكْعَةً ثُمَّ اضْطَجَعَ فَنَامَ حَتَّى نَفَخَ وَكَانَ إِذَا نَامَ نَفَخَ فَأَتَاهُ بِلَالٌ فَآذَنَهُ بِالصَّلَاةِ فَقَامَ فَصَلَّى وَلَمْ يَتَوَضَّأْ وَكَانَ يَقُولُ فِي دُعَائِهِ «اللهُمَّ اجْعَلْ فِي قَلْبِي نُورًا وَفِي سَمْعِي نُورًا وَفِي بَصَرِي نُورًا وَعَنْ يَمِينِي نُورًا وَعَنْ شِمَالِي نُورًا وَفَوْقِي نُورًا وَتَحْتِي نُورًا وَأَمَامِي نُورًا وَخَلْفِي نُورًا وَأَعْظَمْ لِي نُورًا»