عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَجُلًا جَاءَهُ فَقَالَ أَوْصِنِي فَقَالَ سَأَلْتَ عَمَّا سَأَلْتُ عَنْهُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ مِنْ قَبْلِكَ أُوصِيكَ بِتَقْوَى اللَّهِ فَإِنَّهُ رَأْسُ كُلِّ شَيْءٍ وَعَلَيْكَ بِالْجِهَادِ فَإِنَّهُ رَهْبَانِيَّةُ الْإِسْلَامِ وَعَلَيْكَ بِذِكْرِ اللَّهِ وَتِلَاوَةِ الْقُرْآنِ فَإِنَّهُ رُوحُكَ فِي السَّمَاءِ وَذِكْرُكَ فِي الْأَرْضِ
Syedna Abu Saeed Khudri (may Allah be pleased with him) narrates that a man came to me and said: Advise me. I said: The question you have asked me, I had asked the same question to the Messenger of Allah (peace and blessings be upon him) before you (and he said): I advise you to fear Allah, for it is the foundation of everything; adhere to Jihad, for it is the monasticism of Islam; and be regular in the remembrance of Allah and the recitation of the Holy Qur’an, for it is a source of mercy for you in the heavens and a source of mention for you on the earth.