Lemma يَقِين has 3 unique word forms and appears 8 times in the Quran.

Word Translation Occurrences
ٱلۡيَقِينِ certain, (of) certainty 8
ٱلۡيَقِينُ the certainty 4
يَقِينٍ certain 2
يَقِينَۢا certainly 2