The word(s) "wherefor" appears 3 time(s) in 3 verse(s) in Quran in Muhammad Pickthal translation.

(1) Allah forgive thee (O Muhammad)! wherefor didst thou grant them leave ere those who told the truth were manifest to thee and thou didst know the liars?

(سورة التوبة, At-Tawba, Chapter #9, Verse #43)
(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)

(2) He will say: My Lord! wherefor hast Thou gathered me (hither) blind, when I was wont to see?

(سورة طه, Taa-Haa, Chapter #20, Verse #125)
(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)

(3) wherefor, when ye heard it, said ye not: It is not for us to speak of this. Glory be to Thee (O Allah)! This is awful calumny.

(سورة النور, An-Noor, Chapter #24, Verse #16)
(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)