This analogy of truth that burns and detecting truth through fire is already attested in the very earliest texts, that is, in the Gathas and in the "Yasna Haptanghaiti". In "Yasna" 43-44, Ahura Mazda dispenses justice through radiance of His fire and the strength of aṣ̌a. Fire "detects" sinners "by hand-grasping" ("Yasna" 34.4). An individual who has passed the fiery test ("garmo-varah", ordeal by heat), has attained physical and spiritual strength, wisdom, truth and love with serenity ("Yasna" 30.7). Altogether, "there are said to have been some 30 kinds of fiery tests in all." According to the post-Sassanid "Dadestan i denig" (I.31.10), at the final judgement a river of molten metal will cover the earth. The righteous, as they wade through this river, will perceive the molten metal as a bath of warm milk. The wicked will be scorched. For details on aṣ̌a's role in personal and final judgement, see "aṣ̌a" in eschatology, below.