And as reciting mantras, they were about to duly engage in that sacrifice, there arose a mighty and dreadful uproar in the sky.
मन्त्रवच्च यथान्यायं यज्ञोऽसौ सम्प्रवर्तते। आकाशे च महाञ्छब्दः प्रादुरासीद् भयानकः॥