Quran 34:50 from Surah Saba on Divine Marvels.
قُلۡ إِن ضَلَلۡتُ فَإِنَّمَآ أَضِلُّ عَلَىٰ نَفۡسِيۖ وَإِنِ ٱهۡتَدَيۡتُ فَبِمَا يُوحِيٓ إِلَيَّ رَبِّيٓۚ إِنَّهُۥ سَمِيعٞ قَرِيبٞ
English translation: Say If I err then only I will err against myself But if I am guided then it is by what reveals to me my Lord Indeed He (is) All-Hearer Ever-Near
Transliteration: qul in dalaltu fa-innama adillu ala nafsi wa-ini ih'tadaytu fabima yuhi ilayya rabbi innahu sami'un qaribun