Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
darimi:3453ʿAbdullāh b. Ṣāliḥ > Muʿāwiyah b. Ṣāliḥ > Abū Khālid ʿĀmir b. Jashīb And Baḥīr b. Saʿd Yuḥaddithān > Khālid b. Maʿdān

[Machine] Verily, the recitation of the Qur'an is without doubt from the Lord of all worlds. It pleads on behalf of its companion in the grave, saying, "O Allah, if I am from Your book, then intercede for me through it. And if I am not from Your book, then remove me from it." Indeed, it is like a bird that spreads its wings over the grave of its companion, and so it intercedes for him and protects him from the punishment of the grave. And blessed is He in whose hand is the dominion, and He is capable of all things. Similarly, the one who recites these verses becomes immortal and does not sleep until he recites them.  

الدارمي:٣٤٥٣حَدَّثَنَا عَبْدُ اللَّهِ بْنُ صَالِحٍ حَدَّثَنِي مُعَاوِيَةُ بْنُ صَالِحٍ أَنَّهُ سَمِعَ أَبَا خَالِدٍ عَامِرَ بْنَ جَشِيبٍ وَبَحِيرَ بْنَ سَعْدٍ يُحَدِّثَانِ أَنَّ خَالِدَ بْنَ مَعْدَانَ قَالَ

إِنَّ الم تَنْزِيلُ الْكِتَابِ لَا رَيْبَ فِيهِ مِنْ رَبِّ الْعَالَمِينَ تُجَادِلُ عَنْ صَاحِبِهَا فِي الْقَبْرِ تَقُولُ اللَّهُمَّ إِنْ كُنْتُ مِنْ كِتَابِكَ فَشَفِّعْنِي فِيهِ وَإِنْ لَمْ أَكُنْ مِنْ كِتَابِكَ فَامْحُنِي عَنْهُ وَإِنَّهَا تَكُونُ كَالطَّيْرِ تَجْعَلُ جَنَاحَهَا عَلَيْهِ فَيُشْفَعُ لَهُ فَتَمْنَعُهُ مِنْ عَذَابِ الْقَبْرِ وَفِي تَبَارَكَ الَّذِي بِيَدِهِ الْمُلْكُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ مِثْلَهُ فَكَانَ خَالِدٌ لَا يَبِيتُ حَتَّى يَقْرَأَ بِهِمَا