Surah 102. Al-Takathur, Ayah 5

Three kinds of yaqin (certainty of knowledge) are described in n. 5673 to lxix. 51. The first is certainty of mind or inference mentioned here: we hear from someone, or we infer from something we know: this refers to our own state of mind. If we instruct our minds in this way, we should value the deeper things of life better, and not waste all our time in ephemeral things. But if we do not use our reasoning faculties now, we shall yet see with our own eyes, the Penalty for our sins. It will be certainty of sight. We shall see Hell. See next verse. But the absolute certainty of assured Truth is that described in lxix. 51. That is not liable to any human error or psychological defects.