CC Antya 20.62
ātma-sukhera yāhāṅ nāhi gandha
se prema jānā’te loke, prabhu kailā ei śloke,
pade kailā arthera nirbandha
vrajera — of Vṛndāvana; viśuddha-prema — the pure love of Kṛṣṇa; yena — like; jāmbū-nada hema — the golden particles found in the Jāmbū River; ātma-sukhera — of personal sense gratification; yāhāṅ — where; nāhi gandha — there is not even a scent; se prema — that love of Godhead; jānā’te loke — to advertise among the people; prabhu — Śrī Caitanya Mahāprabhu; kailā — has written; ei śloke — this verse; pade — in different steps; kailā arthera nirbandha — has clarified the real meaning.
The pure devotional service in Vṛndāvana is like the golden particles in the river Jāmbū. In Vṛndāvana there is not a trace of personal sense gratification. It is to advertise such pure love in this material world that Śrī Caitanya Mahāprabhu has written the previous verse and explained its meaning.
The verse-referred to here is text 47, the eighth verse of the Śikṣāṣṭaka.