Bhakti-rasāmṛta-sindhu .2.137
30. atha arcanam—
[30. atha archanam—]
śuddhi-nyāsādi-pūrvāṅga-karma-nirvāha-pūrvakam |
[shuddhi-nyaasaadi-poorvaanga-karma-nirvaaha-poorvakam |]
arcanam tūpacārāṇāṁ syān mantreṇopapādanam ||137||
[archanam toopachaaraanaam syaan mantrenopapaadanam ||137||]
Blended reading (Sanskrit + English inline)
30. atha arcanam—
śuddhi-nyāsādi-pūrvāṅga-karma-nirvāha-pūrvakam |
arcanam tūpacārāṇāṁ syān mantreṇopapādanam ||137||
Deity worship (verse 85): Arcana means “offering items with mantra after introductory activities such as bhūta-śuddhi and nyāsa.”
Purport
Arcana Arcana means worship of the Deity in the temple. By executing this process one confirms himself to be not the body but spirit soul.
— A.C. Bhaktivedanta Swami Prabhupāda
Gauḍīya Ācāryas
Jīva Gosvāmī
Gauḍīya
Durgama-saṅgamanī
Commentary
Śuddhi here refers to bhūta-śuddhi, purification of the elements of the body. Nyāsa refers to nyāsas such as mātrikā-nyāsa. These and other actions (purvāṅga-karma) are performed prior to the offering of items (such as lamp and flowers) to the deity. Offering of items with mantra [Note: This would usually be dikṣā-mantras.] along with these preliminary activities is called arcana.
My note
Source: vedabase.io