The importance of doing a thorough job

وَمَنْ أَرَادَ ٱلْءَاخِرَةَ وَسَعَىٰ لَهَا سَعْيَهَا وَهُوَ مُؤْمِنٌۭ فَأُو۟لَٰٓئِكَ كَانَ سَعْيُهُم مَّشْكُورًۭا

Those who do wish for the (things of) the Hereafter, and strive therefor with all due striving, and have Faith,- they are the ones whose striving is acceptable (to Allah).

ذَٰلِكَ وَمَن يُعَظِّمْ شَعَٰٓئِرَ ٱللَّهِ فَإِنَّهَا مِن تَقْوَى ٱلْقُلُوبِ

Such (is his state): and whoever holds in honour the symbols of Allah, (in the sacrifice of animals), such (honour) should come truly from piety of heart.

لَن يَنَالَ ٱللَّهَ لُحُومُهَا وَلَا دِمَآؤُهَا وَلَٰكِن يَنَالُهُ ٱلتَّقْوَىٰ مِنكُمْ ۚ كَذَٰلِكَ سَخَّرَهَا لَكُمْ لِتُكَبِّرُوا۟ ٱللَّهَ عَلَىٰ مَا هَدَىٰكُمْ ۗ وَبَشِّرِ ٱلْمُحْسِنِينَ

It is not their meat nor their blood, that reaches Allah: it is your piety that reaches Him: He has thus made them subject to you, that ye may glorify Allah for His Guidance to you and proclaim the good news to all who do right.

ٱلَّذِينَ هُمْ فِى صَلَاتِهِمْ خَٰشِعُونَ

Those who humble themselves in their prayers;

فَإِذَا فَرَغْتَ فَٱنصَبْ

Therefore, when thou art free (from thine immediate task), still labour hard,