Caitanya-caritāmṛta 17.51
kim iha kṛṇumaḥ kasya brūmaḥ kṛtaṁ kṛtam āśayā kathayata kathām anyāṁ dhanyām aho hṛdaye śayaḥ madhura-madhura-smerākāre mano-nayanotsave kṛpaṇa-kṛpaṇā kṛṣṇe tṛṣṇā ciraṁ bata lambate
[kim iha krinumah kasya broomah kritam kritam aashayaa kathayata kathaam anyaam dhanyaam aho hridaye shayah madhura-madhura-smeraakaare mano-nayanotsave kripana-kripanaa krishne trishnaa chiram bata lambate]
Blended reading (Sanskrit + English inline)
kim iha kṛṇumaḥ kasya brūmaḥ kṛtaṁ kṛtam āśayā kathayata kathām anyāṁ dhanyām aho hṛdaye śayaḥ madhura-madhura-smerākāre mano-nayanotsave kṛpaṇa-kṛpaṇā kṛṣṇe tṛṣṇā ciraṁ bata lambate
Śrī Caitanya Mahāprabhu said, “ ‘Alas, what shall I do? To whom shall I speak? Let whatever I have done in hopes of meeting Kṛṣṇa be finished now. Please say something auspicious, but do not speak about Kṛṣṇa. Alas, Kṛṣṇa is lying within My heart like Cupid; therefore how can I possibly give up talking of Him? I cannot forget Kṛṣṇa, whose smile is sweeter than sweetness itself and who gives pleasure to My mind and eyes. Alas, My great thirst for Kṛṣṇa is increasing moment by moment!’
Purport
This statement by Śrīmatī Rādhārāṇī is quoted from the Kṛṣṇa-karṇāmṛta (42).
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io