Word by Word Analysis

وَمَنْ أَرَادَ ٱلْـَٔاخِرَةَ وَسَعَىٰ لَهَا سَعْيَهَا وَهُوَ مُؤْمِنٌ فَأُو۟لَـٰٓئِكَ كَانَ سَعْيُهُم مَّشْكُورًا 19

But whoever desires the Hereafter and exerts the effort due to it while he is a believer - it is those whose effort is ever appreciated [by Allāh].