يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓا۟ إِن تَتَّقُوا۟ ٱللَّهَ يَجْعَل لَّكُمْ فُرْقَانًا وَيُكَفِّرْ عَنكُمْ سَيِّـَٔاتِكُمْ وَيَغْفِرْ لَكُمْ ۗ وَٱللَّهُ ذُو ٱلْفَضْلِ ٱلْعَظِيمِ Qur’an Al-Anfal (8:29)Ya ayyuha allatheena amanoo in tattaqoo Allaha yajAAal lakum furqanan wayukaffir AAankum sayyiatikum wayaghfir lakum waAllahu thoo alfadli alAAatheemi
I.e., the faculty of moral valuation (Manar IX, 648). See also surah {2}, note [38].
Cf. ii. 53 and ii. 185. The battle of Badr is called the Furqan in Muslim theology, because it was the first trial of strength by battle, in Islam, between the powers of good and evil. Evil was defeated, and those who had real faith were tested and sorted out from those who had not faith enough to follow the banner of Faith. See also viii. 41 and n. 1210.