Arcana-vidhi: The Method of Deity Worship
Vedic, Tantric, and Mixed
शुचि: सम्भृतसम्भार: प्राग्दर्भै: कल्पितासन: । आसीन: प्रागुदग् वार्चेदर्चायां त्वथ सम्मुख: ॥ १९ ॥
śuciḥ sambhṛta-sambhāraḥ prāg-darbhaiḥ kalpitāsanaḥ āsīnaḥ prāg udag vārced arcāyāṁ tv atha sammukhaḥ
Pagkatapos maglinis ng sarili at tipunin ang lahat ng gamit sa pagsamba, dapat ayusin ng sumasamba ang kanyang upuan gamit ang damong kuśa na ang dulo ay nakaturo sa silangan. Pagkaraan, umupo siyang nakaharap sa silangan o hilaga; o kung ang anyo ng Diyos ay nakapirmi sa isang lugar, umupo siyang tuwirang nakaharap dito.
The word sambhṛta-sambhāra means that before beginning the Deity worship one should place all necessary paraphernalia nearby. In this way one will not have to get up continually to search for different items. If the Deity has been permanently installed, then one should sit facing the Deity.
This verse teaches that one should be clean, collect the needed items, prepare a proper seat (traditionally with darbha grass), and only then begin worship of the Deity.
Krishna is outlining an orderly arcana-vidhi: sitting in an auspicious orientation (east or north) and worshiping while directly facing the Deity, emphasizing attentiveness and proper ritual focus.
Keep yourself and the worship space clean, gather your items before starting, sit in a steady place (a simple mat works), face east or north if possible, and worship with full attention facing the Deity.