Some meaning doesn’t sit on the surface of the words. It has to be reached, not just read.
A text has a fixed number of words, but readers keep finding meanings in it the words alone don’t obviously state, which raises an old question: is a “deeper” reading a real discovery, or a reader’s private projection dressed up as scripture?
In Islamic hermeneutics, batin (باطن) is the inner, hidden, or esoteric meaning of a Qur’anic verse, distinguished from the outer, apparent meaning, zahir. Where zahir is recovered through tafsir, batin is approached through ta’wil, literally “returning to the origin,” a hermeneutical method historically associated with Sufi and Shi’a, particularly Ismaili, exegesis; later Shi’a doctrine held that only the Imams possessed reliable access to a verse’s batin.
The relationship is not permission for unlimited reinterpretation. Per classical scholars including Ibn ‘Ajībah, a proposed batin reading is checked against, and must not contradict, the verse’s zahir. The inner meaning extends the outer one; it does not override it.
Source: Kristin Zahra Sands, Sufi Commentaries on the Qur’an in Classical Islam (Routledge, 2006).