Quran 6:153 from Surah Al-An'aam on Divine Marvels.
وَأَنَّ هَٰذَا صِرَٰطِي مُسۡتَقِيمٗا فَٱتَّبِعُوهُۖ وَلَا تَتَّبِعُواْ ٱلسُّبُلَ فَتَفَرَّقَ بِكُمۡ عَن سَبِيلِهِۦۚ ذَٰلِكُمۡ وَصَّىٰكُم بِهِۦ لَعَلَّكُمۡ تَتَّقُونَ
English translation: And that this (is) My path straight so follow it And (do) not follow the (other) paths then they will separate you from His path That (He) has enjoined on you [with it] so that you may become righteous
Transliteration: wa-anna hadha sirati mus'taqiman fa-ittabi'uhu wala tattabi'u al-subula fatafarraqa bikum an sabilihi dhalikum wassakum bihi la'allakum tattaquna