Ash-Shu'ara 51

إِنَّا نَطْمَعُ أَن يَغْفِرَ لَنَا رَبُّنَا خَطَـٰيَـٰنَآ أَن كُنَّآ أَوَّلَ ٱلْمُؤْمِنِينَ

innā naṭmaʿu an yaghfira lanā rabbunā khaṭāyānā an kunnā awwala l-mu'minīna

Indeed, we aspire that our Lord will forgive us our sins because we were the first of the believers."