Three Exhorters
It is reported that ʿAbd Al-ʿAzīz b. Abī Rawwād – Allāh have mercy on him – said to a man:
Whoever does not take exhortation [and is not effected] by three things, will not be exhorted by anything: Islām, the Qurān and old age (graying).
Ibn Abī Al-Dunyā, Al-ʿUmr Wa Al-Shayb #40
Also read
Related sayings.
There are four types of men when it comes to knowledge.
Ibn Masud mentions some of the worst sins related to belief and worship of Allah.