﴿ وَٱلْءَاخِرَةُ خَيْرٌۭ وَأَبْقَىٰٓ ﴾

“although the life to come is better and more enduring.”

(Although the Hereafter) striving for the Hereafter and the reward of the Hereafter (is better) than striving for the life of the world and reward of the life of the world (and more lasting.