﴿ وَهَٰذَا صِرَٰطُ رَبِّكَ مُسْتَقِيمًۭا ۗ قَدْ فَصَّلْنَا ٱلْءَايَٰتِ لِقَوْمٍۢ يَذَّكَّرُونَ ﴾

“And undeviating is this thy Sustainer's way. Clearly, indeed, have We spelled out these messages unto people who [are willing to] take them to heart!”

And this path that you follow O Muhammad (s) is the path of your Lord a straight one with no crookedness therein mustaqīman ‘straight’ is in the accusative because it is a circumstantial qualifier emphasising the previous statement and it is operated by the import of the demonstrative noun hādhā ‘this’. We have detailed We have elucidated the signs for a people who remember yadhdhakkarūn the original tā’ has been assimilated with the dhāl that is to say a people who heed admonition — such people are singled out for mention because they are the ones to profit from the signs.