Caitanya-caritāmṛta 16.145
sva-nigamam apahāya mat-pratijñām ṛtam adhikartum avapluto ratha-sthaḥ dhṛta-ratha-caraṇo ’bhyayāc calad-gur harir iva hantum ibhaṁ gatottarīyaḥ
[sva-nigamam apahaaya mat-pratijnaam ritam adhikartum avapluto ratha-sthah dhrita-ratha-charano ’bhyayaach chalad-gur harir iva hantum ibham gatottareeyah]
Blended reading (Sanskrit + English inline)
sva-nigamam apahāya mat-pratijñām ṛtam adhikartum avapluto ratha-sthaḥ dhṛta-ratha-caraṇo ’bhyayāc calad-gur harir iva hantum ibhaṁ gatottarīyaḥ
“ ‘Intending to make my promise true, Lord Kṛṣṇa broke His own promise not to take up a weapon at Kurukṣetra. With His outer garment falling off, Lord Śrī Kṛṣṇa jumped from His chariot, picked up a wheel and came running at me to kill me. Indeed, He rushed at me like a lion going to kill an elephant, and He caused the whole earth to tremble.’
Purport
Lord Kṛṣṇa promised not to fight in the Battle of Kurukṣetra or even take up a weapon. But when Bhīṣma wanted to keep his own promise to break the promise of the Lord, the Lord immediately got down from the chariot, and to make Bhīṣma’s promise true He picked up a chariot wheel and rushed forward to kill him. This is a quotation from Śrīmad-Bhāgavatam (1.9.37).
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io