Mahabharata 3.213.27

अमावास्यां संप्रवृत्तं मुहूर्तं रौद्रमेव चदेवासुरं च संग्रामं सोऽपश्यदुदये गिरौ

amāvāsyāṃ saṃpravṛttaṃ muhūrtaṃ raudrameva cadevāsuraṃ ca saṃgrāmaṃ so'paśyadudaye girau

Our plain-language meaning of this verse is waiting for scholar review.