The word(s) "shahidun" appears 3 time(s) in 3 verse(s) in Quran.

(1) Afaman kana AAala bayyinatin min rabbihi wayatloohu shahidun minhu wamin qablihi kitabu moosa imaman warahmatan olaika yuminoona bihi waman yakfur bihi mina alahzabi faalnnaru mawAAiduhu fala taku fee miryatin minhu innahu alhaqqu min rabbika walakinna akthara alnnasi la yuminoona

(سورة هود, Hud, Chapter #11, Verse #17)
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(2) Qala hiya rawadatnee AAan nafsee washahida shahidun min ahliha in kana qameesuhu qudda min qubulin fasadaqat wahuwa mina alkathibeena

(سورة يوسف, Yusuf, Chapter #12, Verse #26)
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(3) Qul araaytum in kana min AAindi Allahi wakafartum bihi washahida shahidun min banee israeela AAala mithlihi faamana waistakbartum inna Allaha la yahdee alqawma alththalimeena

(سورة الأحقاف, Al-Ahqaf, Chapter #46, Verse #10)
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