The word(s) "impair" appears 1 time(s) in 1 verse(s) in Quran in Muhammad Pickthal translation.

(1) If Allah touch thee with affliction, there is none that can relieve therefrom save Him, and if He touch thee with good fortune (there is none that can impair it); for He is Able to do all things.

(سورة الأنعام, Al-An'aam, Chapter #6, 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)