»The surah proclaiming the Quran that God bestowed upon Muhammad to be, in its finality and totality, The Criterion of everlasting salvation for all humankind until the end of time. It takes its name from verse 1, which refers to the Quran as “al-Furqān” (lit. “the Distinguisher”, “the Separator” or “the Differentiator”, i.e. a criterion for distinguishing between truth and falsehood). The surah starts with a denunciation of polytheism, then deals with the disbelievers” arguments against the Prophet, the Quran, and the Day of Judgement. It warns them of their fate, citing examples of earlier peoples. The surah describes the power and grace of God, and ends with the qualities of true believers in verse 63 ff.«

The surah is also known as Discrimination, Salvation, The Differentiator, The Standard