Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 45
Sanskrit:
तं दृष्ट्वाचिन्तयत् कृष्ण: सङ्कर्षणसहायवान् ।अहो यदूनां वृजिनं प्राप्तं ह्युभयतो महत् ॥ ४५ ॥
ITRANS:
taṁ dṛṣṭvācintayat kṛṣṇaḥsaṅkarṣaṇa sahāyavānaho yadūnāṁ vṛjinaṁprāptaṁ hy ubhayato mahat
Translation:
When Lord Kṛṣṇa and Lord Saṅkarṣaṇa saw Kālayavana, Kṛṣṇa thought about the situation and said, “Ah, a great danger now threatens the Yadus from two sides.
Purport:
We may note here that although Śrī Kṛṣṇa had defeated Jarāsandha seventeen times against tremendous odds, He did not immediately annihilate the army of Kālayavana, thus keeping intact the benediction granted to Gārgya by Lord Śiva, as explained in the previous purport.