The word(s) "mithluhu" appears 4 time(s) in 4 verse(s) in Quran.

(1) In yamsaskum qarhun faqad massa alqawma qarhun mithluhu watilka alayyamu nudawiluha bayna alnnasi waliyaAAlama Allahu allatheena amanoo wayattakhitha minkum shuhadaa waAllahu la yuhibbu alththalimeena

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #140)
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(2) Waqad nazzala AAalaykum fee alkitabi an itha samiAAtum ayati Allahi yukfaru biha wayustahzao biha fala taqAAudoo maAAahum hatta yakhoodoo fee hadeethin ghayrihi innakum ithan mithluhum inna Allaha jamiAAu almunafiqeena waalkafireena fee jahannama jameeAAan

(سورة النساء, An-Nisaa, Chapter #4, Verse #140)
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(3) Fakhalafa min baAAdihim khalfun warithoo alkitaba yakhuthoona AAarada hatha aladna wayaqooloona sayughfaru lana wain yatihim AAaradun mithluhu yakhuthoohu alam yukhath AAalayhim meethaqu alkitabi an la yaqooloo AAala Allahi illa alhaqqa wadarasoo ma feehi waalddaru alakhiratu khayrun lillatheena yattaqoona afala taAAqiloona

(سورة الأعراف, Al-A'raaf, Chapter #7, Verse #169)
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(4) Anzala mina alssamai maan fasalat awdiyatun biqadariha faihtamala alssaylu zabadan rabiyan wamimma yooqidoona AAalayhi fee alnnari ibtighaa hilyatin aw mataAAin zabadun mithluhu kathalika yadribu Allahu alhaqqa waalbatila faamma alzzabadu fayathhabu jufaan waamma ma yanfaAAu alnnasa fayamkuthu fee alardi kathalika yadribu Allahu alamthala

(سورة الرعد, Ar-Ra'd, Chapter #13, Verse #17)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)