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

(1) But whoso repenteth after his wrongdoing and amendeth, lo! Allah will relent toward him. Lo! Allah is Forgiving, Merciful.

(سورة المائدة, Al-Maaida, Chapter #5, Verse #39)
(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) O Children of Adam! When messengers of your own come unto you who narrate unto you My revelations, then whosoever refraineth from evil and amendeth - there shall no fear come upon them neither shall they grieve.

(سورة الأعراف, Al-A'raaf, Chapter #7, Verse #35)
(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) The guerdon of an ill-deed is an ill the like thereof. But whosoever pardoneth and amendeth, his wage is the affair of Allah. Lo! He loveth not wrong-doers.

(سورة الشورى, Ash-Shura, Chapter #42, Verse #40)
(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)