Al-Baqarah 2:103
وَلَوْ أَنَّهُمْ ءَامَنُوا۟ وَٱتَّقَوْا۟ لَمَثُوبَةٌ مِّنْ عِندِ ٱللَّهِ خَيْرٌ ۖ لَّوْ كَانُوا۟ يَعْلَمُونَ
Walaw annahum amanoo wattaqawlamathoobatun min AAindi Allahi khayrun law kanooyaAAlamoon
And if they had believed and feared Allāh, then the reward from Allāh would have been [far] better, if they only knew.
And had they accepted the faith, and been God-fearing, the reward from Allah would have always been far better. If only they knew!