Al-Batin (الباطن) is the divine Name denoting God's absolute hiddenness — the interior reality (batin) that underlies and pervades all manifest forms (zahir). The Quran declares 'He is the First and the Last, the Manifest and the Hidden' (57:3), and in Sufi metaphysics this pair — Az-Zahir and Al-Batin — describes not two Gods but one Reality known through complementary faces. Ibn Arabi in the Fusus al-Hikam teaches that al-Batin is the divine Essence (dhat) that can never be grasped by created perception: it is not hidden as an object behind a curtain, but hidden because it is the very light by which all seeing occurs. Contemplation of al-Batin draws the salik inward from zahiri (exoteric) knowledge toward the batini (esoteric) dimensions of all things.