Abdullah ibn Amr reported: The Messenger of Allah, peace and blessings be upon him, said, “Fasting and the Quran will intercede for the servant on the Day of Resurrection. Fasting will say: O Lord, I prevented him from food and drink during the day, so let me intercede for him. The Quran will say: O Lord, I prevented him from sleeping during the night, so let me intercede for him. Thus, they will both intercede for him.”
Source: Musnad Aḥmad 6626
Grade: Sahih (authentic) according to Ahmad Shakir
عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ 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
6626 مسند أحمد مسند المكثرين من الصحابة
6/188 المحدث أحمد شاكر خلاصة حكم المحدث إسناده صحيح في تخريج المسند