Qur'an 2:103

وَلَوْ أَنَّهُمْ ءَامَنُوا۟ وَٱتَّقَوْا۟ لَمَثُوبَةٌ مِّنْ عِندِ ٱللَّهِ خَيْرٌ ۖ لَّوْ كَانُوا۟ يَعْلَمُونَ

“And if they had believed and feared Allāh, then the reward from Allāh would have been [far] better, if they only knew.”

Al-Baqara 2:103 · Saheeh International