Transformations of Knowledge in the Islamic Intellectual Tradition: From Inner Experience to Normative Measure in Light of the Branches of Faith

 

This presentation is not merely a comparison between major figures, but rather a tracing of a profound transformation in the concept of knowledge within the Islamic intellectual experience, where the doctrinal question intersects with the epistemological one: how truth is apprehended, and how faith is embodied within the human being.

Within this horizon, Ibn Taymiyya emerges not merely as a jurist and critic, but as a thinker with an implicit epistemological stance that extends to the evaluation of the sources of knowledge themselves. He does not deny mystical experience nor reject spiritual unveiling, but he acknowledges their reality within religious life while stripping them of absolute authority and preventing them from becoming independent sources of truth. In doing so, he reorganizes the epistemic structure: revelation is the governing foundation, reason is a regulating instrument, and inner experience is a valid but conditioned domain. His project is not the rejection of Sufism, but its subordination to a higher criterion that prevents its uncontrolled expansion.

In contrast, the project of Ibn Arabi unfolds as a qualitative expansion in the horizon of knowledge. For him, unveiling is not merely a subjective spiritual state, but a mode of cognition grounded in symbolic inner occurrences that reach the heart as meanings perceived through multiple levels of manifestation. Within this symbolic realm, the concept often associated with unity of existence is not understood as union or incarnation, but as an indication of the unity of the divine source of being and the multiplicity of its names manifested in creation. Thus, witnessing becomes a way of reading multiplicity as an ordered network of signs pointing toward a single origin, while preserving the distinction between entities. Truth is thereby transformed from a static correspondence into a lived experience of presence, where the inner dimension becomes a revealing horizon of meaning without negating the external, but rather reinterpreting it across graded levels of significance.

Between these two approaches stands Al-Ghazali in a foundational position. He begins from a comprehensive epistemic crisis that calls into question both sense perception and rational certainty, only to conclude that certainty cannot be attained except through a divine light cast into the heart. Yet he does not transform this light into an independent metaphysical system; rather, he keeps it bound to the framework of revelation. In this way, he opens the door to inner spiritual knowledge without granting it sovereignty. He thus marks a decisive shift from the question of what we know to the question of how we know, leaving open two trajectories: an expansive mystical path and a corrective normative one.

When placed within its historical sequence, this development appears as a gradual movement rather than isolated positions:

• with Al-Ghazali (d. 505 AH), the legitimacy of the inner dimension was established;
• with Ibn Arabi (d. 638 AH), this dimension reached its metaphysical and experiential culmination;
• and with Ibn Taymiyya (d. 728 AH), it underwent a process of epistemic regulation and rebalancing.

This transformation is inseparable from the structure of faith itself as articulated in the classical conception of the “branches of faith,” where belief is not a simple affirmation, but a composite structure integrating doctrine, inner states, and outward actions. Accordingly, the positions of these thinkers can be read as different interpretations of this structure:

• Al-Ghazali sees faith as an ascending path from knowledge to spiritual realization without rupture;
• Ibn Arabi transforms it into a network of manifestations in which truth unfolds without separation from its source;
• Ibn Taymiyya reintegrates these dimensions within a normative framework that preserves unity while preventing dispersion.

Thus, the disagreement is not between reason and mysticism, but rather concerns the placement of revelation, reason, and spiritual experience within the structure of knowledge. If Ibn Arabi grants central weight to inner experience, and Ibn Taymiyya returns it to revelation, Al-Ghazali maintains a productive tension between them: the inward as path, the outward as criterion.

Yet this balance was never historically settled; instead, it branched into two parallel trajectories: an expansive experiential mystical current, and a restrictive normative one. Over time, their separation produced a dual imbalance: a spiritual subjectivity lacking criterion, and a formal rationality lacking inner vitality.

From here, the concept of the “branches of faith” regains its deeper meaning, not as a traditional classification, but as a system of balance: preserving doctrinal branches as the criterion of truth, preserving inner branches as its living depth, and preserving outward branches as its realization in action.

On this basis, the solution does not lie in privileging one dimension over another, but in reconstructing them within a living unity. Faith is not merely conceptual knowledge, nor purely inward experience, but a reality distributed across the whole human being: founded by revelation, structured by reason, vivified by the heart, and embodied in action.

At this level, the contemporary question becomes an extension of that classical dialogue: not which model to choose, but how to reassemble what has been dispersed, so that faith may regain its balance—depth without excess, normativity without rigidity, and unity that reconnects knowledge, experience, and action within a single integrated structure.