Śrīmad-Bhāgavatam · Text 10.30.3
Who is speaking and story frame
गतिस्मितप्रेक्षणभाषणादिषु
प्रिया: प्रियस्य प्रतिरूढमूर्तय: ।
असावहं त्वित्यबलास्तदात्मिका
न्यवेदिषु: कृष्णविहारविभ्रमा: ॥ ३ ॥
gati-smita-prekṣaṇa-bhāṣaṇādiṣu
priyāḥ priyasya pratirūḍha-mūrtayaḥ
asāv ahaṁ tv ity abalās tad-ātmikā
nyavediṣuḥ kṛṣṇa-vihāra-vibhramāḥ
Because the beloved gopīs were absorbed in thoughts of their beloved Kṛṣṇa, their bodies imitated His way of moving and smiling, His way of beholding them, His speech and His other distinctive features. Deeply immersed in thinking of Him and maddened by remembering His pastimes, they declared to one another, “I am Kṛṣṇa!”
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.