Maitreya the sage told Vidura: O annihilator of enemies, while thus speaking to her father in the arena of sacrifice, Satī sat down on the ground and faced north. Dressed in saffron garments, she sanctified herself with water and closed her eyes to absorb herself in the process of mystic yoga.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
मैत्रेय उवाच । इत्यध्वरे दक्षमनूद्य शत्रुहन् क्षितावुदीचीं निषसाद शान्तवाक् । स्पृष्ट्वा जलं पीतदुकूलसंवृता निमील्य दृग्योगपथं समाविशत्
maitreya uvāca | ityadhvare dakṣamanūdya śatruhan kṣitāvudīcīṃ niṣasāda śāntavāk | spṛṣṭvā jalaṃ pītadukūlasaṃvṛtā nimīlya dṛgyogapathaṃ samāviśat
SB 4.4.24