Caitanya-caritāmṛta 8.208
kṛṣṇa saha rādhikāra līlā ye karāya nija-sukha haite tāte koṭi sukha pāya
[krishna saha raadhikaara leelaa ye karaaya nija-sukha haite taate koti sukha paaya]
Blended reading (Sanskrit + English inline)
kṛṣṇa saha rādhikāra līlā ye karāya nija-sukha haite tāte koṭi sukha pāya
“The happiness of the gopīs increases ten million times when they serve to engage Śrī Śrī Rādhā and Kṛṣṇa in Their transcendental pastimes.
My note
Source: vedabase.io