CC Madhya 21.103
tāra śakti loke dekhāite
ei rūpa-ratana, bhakta-gaṇera gūḍha-dhana,
prakaṭa kailā nitya-līlā haite
yoga-māyā — internal energy; cit-śakti — spiritual potency; viśuddha-sattva — of transcendental pure goodness; pariṇati — a transformation; tāra śakti — the potency of such energy; loke dekhāite — to exhibit within the material world; ei rūpa-ratana — this beautiful, transcendental, jewellike form; bhakta-gaṇera gūḍha-dhana — the most confidential treasure of the devotees; prakaṭa — exhibition; kailā — made; nitya-līlā haite — from the eternal pastimes of the Lord.
“The transcendental form of Kṛṣṇa is shown to the world by Lord Kṛṣṇa’s internal, spiritual energy, which is a transformation of pure goodness. This jewellike form is the most confidential treasure of the devotees. This form is manifested from Kṛṣṇa’s eternal pastimes.