Quran 23:34 from Surah Al-Muminoon on Divine Marvels.
وَلَئِنۡ أَطَعۡتُم بَشَرٗا مِّثۡلَكُمۡ إِنَّكُمۡ إِذٗا لَّخَٰسِرُونَ
English translation: And surely if you obey a man like you indeed you then surely (will be) losers
Transliteration: wala-in ata'tum basharan mith'lakum innakum idhan lakhasiruna