عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو رَضِيَ اللَّهُ عَنْهُمَا أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ الصِّيَامُ وَالْقُرْآنُ يَشْفَعَانِ لِلْعَبْدِ يَوْمَ الْقِيَامَةِ يَقُولُ الصِّيَامُ أَيْ رَبِّ مَنَعْتُهُ الطَّعَامَ وَالشَّهَوَاتِ بِالنَّهَارِ فَشَفِّعْنِي فِيهِ وَيَقُولُ الْقُرْآنُ مَنَعْتُهُ النَّوْمَ بِاللَّيْلِ فَشَفِّعْنِي فِيهِ قَالَ فَيُشَفَّعَانِ
It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both), the Noble Prophet (peace and blessings be upon him) said: Fasting and the Qur'an will intercede for the servant on the Day of Resurrection. Fasting will say: O my Lord! I kept him away from food, drink, and other desires, so accept my intercession for him. The Qur'an will say: I kept him from sleeping at night, so accept my intercession for him. Thus, their intercession will be accepted.