The distinction between Muhkam wa Mutashabih is mentioned in Surah Ali 'Imran. Muhkam verses are the "decisive" ones, while Mutashabih are "allegorical" or "ambiguous" (such as the nature of the unseen or the attributes of God). Following the Muhkam is the duty of all, while trying to find "hidden" meanings in the Mutashabih to create fitnah is criticized. This duality reflects the nature of the Quran as both a practical guide for law and a profound spiritual text that touches upon the mysteries of existence.