Skanda Purana — Mahesvara Khanda, Shloka 86
यदा यदा हि धर्मस्य ग्लानिराविर्भवेद्धरिः । तदातदावतीर्याहं विष्णोरस्य सहायिनी
yadā yadā hi dharmasya glānirāvirbhaveddhariḥ | tadātadāvatīryāhaṃ viṣṇorasya sahāyinī
每当正法衰微、哈利（毗湿奴 Viṣṇu）示现之时，就在那一刻，我亦随之降临，成为彼毗湿奴的助伴与同侣。
Ekānaṃśā (Yogamāyā), declaring her avatāra-role alongside Viṣṇu
Listener: Vṛkodara (Bhīma)
Scene: A doctrinal revelation: as Hari descends when dharma declines, the divine feminine also descends as his helper—suggesting paired radiance and coordinated mission.
FAQs
Dharma-restoration is a coordinated divine act: when Viṣṇu manifests, the divine feminine power also descends to assist the cosmic mission.
No tīrtha is named; the verse is theological, explaining avatāra purpose.
None explicitly; it supports devotional contemplation of avatāra (avatāra-smaraṇa) as a dharmic practice.