The word(s) "insha" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) And, when he (his son) was old enough to walk with him, he said: "O my son! I have seen in a dream that I am slaughtering you (offering you in sacrifice to Allah). So look what you think!" He said: "O my father! Do that which you are commanded, insha' Allah (if Allah wills), you shall find me of As-Sabirun (the patient)."

(سورة الصافات, As-Saaffaat, Chapter #37, Verse #102)
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(2) Without saying: insha' Allah (If Allah wills).

(سورة القلم, Al-Qalam, Chapter #68, Verse #18)
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(3) The best among them said: "Did I not tell you: why say you not: insha' Allah (If Allah wills)."

(سورة القلم, Al-Qalam, Chapter #68, Verse #28)
(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)