This paper presents āśraya-parāvṛtti as the consummation of a long-regulated causal stream, rather than a spontaneous, achronological event. With Vasubandhu and Xuanzang, we characterise the transformation of the ālaya-vijñāna into luminous wisdom as a transintentional causality of cosmic scale that exceeds any subjective enterprise. Seeds and habit-energies are perfumed and regulated across innumerable lives until reversal becomes possible, indeed, inevitable, within a conditioned stream. We map the mechanics through Yogācāra’s eight consciousnesses, focusing on the kliṣṭamanas, whose dual role, sustaining illusion via the discrimination of an ‘I’ and, at once, intimating the cessation of defiled operations, constitutes the pivotal juncture in the architecture of transformation. With Xuanzang’s cosmological expansion, the turning becomes worldscale; the basis underpins the three realms and six destinies, so its purification reconfigures a shared experiential field. We then detour to the Platonists to help clarify the staging process of the transformation.While our results show that noetic reversal echoes parāvṛtti, there remains an irreconcilable difference. Yogācāra’s non-externalism treats devas, formless attainments, and environments as karmic unfoldings of internal seeds, with ‘external’ factors as mere dominant conditions, whereas Platonists posit an intelligible cosmic order that figures directly into the stream’s transformation. We conclude that parāvṛtti is preceded by practice that is principally regulative, an attuned ‘letting be’ through which consciousness becomes transparent to its own direction, revealing broader implications for contemporary discourse on intentionality, causality, and metaphysics more broadly.