Mahabharata 8.40.13

ततस्तौ रभसौ युद्धे भ्रातरौ भ्रातरं नृपशरैर्ववर्षतुर्घोरैर्महामेघौ यथाचलम्

tatastau rabhasau yuddhe bhrātarau bhrātaraṃ nṛpaśarairvavarṣaturghorairmahāmeghau yathācalam

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