﴿ وَإِذْ ءَاتَيْنَا مُوسَى ٱلْكِتَٰبَ وَٱلْفُرْقَانَ لَعَلَّكُمْ تَهْتَدُونَ ﴾

“And [remember the time] when We vouchsafed unto Moses the divine writ-and [thus] a standard by which to discern the true from the false -so that you might be guided aright;”

And when We gave to Moses the Scripture the Torah and the Criterion wa’l-furqān is an explicative supplement of Torah that is the one that discriminates faraqa between truth and falsehood and between what is licit and illicit so that you might be guided by it away from error.