If you fear Allah, He will grant you a criteria

اعوذ بالله من الشيطن الرجيم

Surah 8. Al-Anfal, Verse 29:

يَا أَيُّهَا الَّذِينَ آمَنُوا إِن تَتَّقُوا اللَّهَ يَجْعَل لَّكُمْ فُرْقَانًا وَيُكَفِّرْ عَنكُمْ سَيِّئَاتِكُمْ وَيَغْفِرْ لَكُمْ وَاللَّهُ ذُو الْفَضْلِ الْعَظِيمِ

Translation:

O you who believe! If you obey and fear Allah, He will grant you Furqan a criterion [(to judge between right and wrong), or (Makhraj, i.e. making a way for you to get out from every difficulty)], and will expiate for you your sins, and forgive you, and Allah is the Owner of the Great Bounty.

via iQuran