Lemma اسْتَيْقَنَتْ has 2 unique word forms and appears 2 times in the Quran.

Word Translation Occurrences
لِيَسۡتَيۡقِنَ that may be certain 2
وَٱسۡتَيۡقَنَتۡهَآ though were convinced with them (signs) 2