عَنْ عَبْدِ اللّٰہ بْنِ عَمْرٍو أَنَّ رَسُولَ اللّٰہ صلّى اللّٰہ عليه وسلّم قَالَ: الصِّيَامُ وَالْقُرْآنُ يَشْفَعَانِ لِلْعَبْدِ يَقُولُ الصِّيَامُ أَيْ رَبّ إِنّي مَنَعْتُهُ الطَّعَامَ وَالشَّهَوَاتِ بِالنَّهَارِ فَشَفّعْنِي فِيهِ وَيَقُولُ الْقُرْآنُ مَنَعْتُهُ النُّوْمَ بِاللَّيْلِ فَشَفّعْنِي فِيهِ فيشفعان.
It is narrated by Hazrat Abdullah ibn Amrra that Allah’s Messengersa said, “Fasting and the Quran will intercede for the servant. Fasting will say, ‘O my Lord, I prevented him from food and [other] desires during the day, so allow me to intercede for him.’ And the Quran will say, ‘I kept him from sleep at night, so allow me to intercede for him.’ Then, they will both be allowed to intercede.”
(Mishkat al-Masabih, Kitab as-sawm, Hadith 1963)