Śrīmad-Bhāgavatam · Text 10.50.45
Who is speaking and story frame
तं दृष्ट्वाचिन्तयत् कृष्ण: सङ्कर्षणसहायवान् ।
अहो यदूनां वृजिनं प्राप्तं ह्युभयतो महत् ॥ ४५ ॥
taṁ dṛṣṭvācintayat kṛṣṇaḥ
saṅkarṣaṇa sahāyavān
aho yadūnāṁ vṛjinaṁ
prāptaṁ hy ubhayato mahat
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.
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.