Fear of Allah
14) Narrated Abu Sa'id Al-Khudri. He quoted Prophet Muhammad saying to his Companions that: a man from among the early people or from those before you had said a word, i.e. Allah had blessed him with wealth and sons. When death approached him, he asked his sons: How was I being as a father? They replied: You were the best father. He said: I didn't save or perform any good deeds for Allah. If Allah takes possession of me, He will punish me. So, look! when I am dead, bum me until I become coal then crush me well and scatter (my ashes in the air) on a stormy day. The Prophet said: He took a covenant from his sons (and died). They did according to his will and spread his ashes in the air on a stormy day. Allah said: Be and there he was embodied before Him. Allah, the Exalted, asked him: a my slave! what induced you to do what you did. He replied: It was Your fear (so that I may not appear before You). The Prophet added: Allah, the Exalted rewarded him with His Mercy; the Prophet said second time: Allah did not punish him.
(This Hadith is sound and reported by Bukhari and Muslim).
This man was a believer in the Power of Allah to resurrect, and punish. His such belief and fear caused him to make that will which led him to Allah's forgiveness.