Unconditioned by time, Īśvara is the teacher even of the earliest teachers.

Teacher Without Temporal Limit

Sūtra 1.26 draws out a further consequence of the definition established in 1.24–1.25: because Īśvara's knowledge is unsurpassed and unafflicted, and because Īśvara is kālena anavacchedāt, unconditioned or unlimited by time, Īśvara can serve as guru even of the pūrveṣām, the earliest or "first" teachers, those figures tradition regards as the original sources of instruction in any given lineage. The sūtra addresses a specific structural problem: any human teacher learned their knowledge from an earlier teacher, and that teacher from one earlier still, creating an apparent infinite regress that requires some non-temporal source to ground the whole chain of instruction.

Vyāsa's Resolution of the Regress

Vyāsa reads this sūtra as resolving exactly this regress: since Īśvara's knowledge is not acquired in time but is an eternal, unsurpassed feature of this special puruṣa, Īśvara can serve as the ultimate, non-derivative teacher standing behind every lineage of human instruction, without requiring a prior teacher in turn. This does not necessarily mean Īśvara appeared historically to instruct the first human teachers directly; rather, later commentators generally read this as Īśvara's knowledge being the timeless source or template that any genuine teaching ultimately expresses, whether or not the historical transmission chain can be traced back to an explicit encounter.

Later Interpretive Directions

Vācaspati Miśra connects this sūtra to the broader Yoga concern with the reliability of testimony (āgama) as a valid means of knowledge, discussed later in 1.7, suggesting that teachings whose ultimate source is grounded in Īśvara's unafflicted, timeless knowledge carry a distinctive authority compared to merely human speculation subject to error and the influence of kleśas. Vijñānabhikṣu extends this reading within his more theistic framework, treating Īśvara's guruship as an active, ongoing relationship available to any sincere practitioner, not confined to a single historical moment of first transmission. Hariharānanda Āraṇya notes that this sūtra sets up the immediately following one, 1.27, which identifies praṇava, the syllable oṃ, as Īśvara's vācaka, or verbal designation, providing a concrete, practicable link between the abstract philosophical definition just completed and an actual meditative practice available to ordinary aspirants seeking connection with this timeless source of instruction.

Locating Authority Beyond Lineage Alone

Sūtra 1.26 offers a way of thinking about teaching authority that does not rest solely on an unbroken historical chain back to a founding figure, useful when lineage claims are uncertain or contested.

Testimony and Its Ultimate Source

Vācaspati Miśra's link to āgama, valid testimony, suggests a practical criterion: teachings can be assessed partly by whether they cohere with the kind of unafflicted, timeless knowledge this sūtra attributes to Īśvara, rather than by lineage credentials alone.

Practical Reflections

1. Notice whether a given teaching's authority is being claimed through historical lineage, internal coherence, or both together.
2. Consider that genuine instruction, on this view, ultimately expresses a timeless source rather than depending only on unbroken human transmission.
3. Approach any teacher, ancient or contemporary, with attention to the content and coherence of what is actually taught.
4. Use this sūtra's resolution of an infinite regress as a reminder that first causes need not be historically documentable to be philosophically coherent.
5. Read the following sūtra's account of praṇava as the concrete practice this teacher-relationship makes available.

Understood this way, 1.26 offers a philosophical grounding for teaching authority that complements, without replacing, careful attention to a teacher's actual conduct and instruction.

A common misreading treats this sūtra as claiming that Īśvara literally, historically appeared to instruct the first human teacher at some specific point in time, when Vyāsa's resolution of the regress problem works instead at the level of timeless knowledge grounding all instruction, not necessarily a single narrated historical encounter. A second misunderstanding uses this sūtra to argue that any teacher claiming an unbroken lineage back to antiquity thereby possesses guaranteed authority, missing that the sūtra's philosophical point concerns Īśvara's role as non-derivative source, not a warrant for uncritical acceptance of any particular human lineage claim encountered today. A third error treats "guru of the earliest teachers" as elevating Īśvara above ordinary teacher-student relationships in a way that displaces the value of human teachers altogether, when Vācaspati Miśra's connection to āgama suggests instead that human teaching remains valuable precisely insofar as it transmits knowledge coherent with this ultimate source. Some modern readers also skip the sūtra's careful logical structure, treating it as devotional flourish rather than as Patañjali's considered response to a genuine philosophical problem about the origin of reliable testimony discussed formally at 1.7. Reading 1.26 as solving a specific regress problem, rather than as an unqualified claim about historical events, keeps its argument intact and prepares its connection to the practical instruction given immediately afterward in 1.27.