Caitanya-caritāmṛta 4.179
se pratijñā bhaṅga haila gopīra bhajane tāhāte pramāṇa kṛṣṇa-śrī-mukha-vacane
[se pratijnaa bhanga haila gopeera bhajane taahaate pramaana krishna-shree-mukha-vachane]
Blended reading (Sanskrit + English inline)
se pratijñā bhaṅga haila gopīra bhajane tāhāte pramāṇa kṛṣṇa-śrī-mukha-vacane
That promise has been broken by the worship of the gopīs, as Lord Kṛṣṇa Himself admits.
My note
Source: vedabase.io