Shiva Purana — Vayaviya Samhita, Shloka 41
योगप्रकारनिर्णयः
Classification and Definition of Yoga
प्राणे तु विजिते सम्यक्तच्चिह्नान्युपलक्षयेत् । विण्मूत्रश्लेष्मणां तावदल्पभावः प्रजायते
prāṇe tu vijite samyaktaccihnānyupalakṣayet | viṇmūtraśleṣmaṇāṃ tāvadalpabhāvaḥ prajāyate
当真正降伏并善加掌御普拉那（prāṇa）时，应当识别其征相：此时粪便、尿液与痰涎的排出会明显减少。
Suta Goswami (narrating Shiva’s yogic doctrine as taught in the Vāyavīyasaṃhitā)
Tattva Level: pashu
Shiva Form: Dakṣiṇāmūrti
Role: teaching
FAQs
It points to a yogic marker of inner purification: as prāṇa becomes steady under disciplined control, gross bodily eliminations diminish, indicating increasing subtlety of the body-mind and readiness for deeper Shaiva contemplation of Pati (Shiva).
In the Vāyu Saṃhitā, outer worship supports inner transformation; prāṇa-mastery stabilizes attention so the devotee can perform Linga-dhyāna and Saguna Shiva upāsanā with one-pointedness, turning ritual devotion into sustained inner absorption.
It suggests regulated prāṇāyāma and disciplined yogic living (mitāhāra, purity, steady breath), treating reduced bodily waste as an observed sign of progress rather than a goal, while maintaining Shiva-oriented meditation and mantra-japa.