Quran 6:41 from Surah Al-An'aam on Divine Marvels.
بَلۡ إِيَّاهُ تَدۡعُونَ فَيَكۡشِفُ مَا تَدۡعُونَ إِلَيۡهِ إِن شَآءَ وَتَنسَوۡنَ مَا تُشۡرِكُونَ
English translation: Nay Him Alone you call and He would remove what you call upon Him if He wills and you will forget what you associate (with Him)
Transliteration: bal iyyahu tad'una fayakshifu ma tad'una ilayhi in shaa watansawna ma tush'rikuna