Mahabharata 7.64.37
तपनीयविचित्राणि सिक्तानि रुधिरेण चअदृश्यन्त यथा राजन्मेघसंघाः सविद्युतः
tapanīyavicitrāṇi siktāni rudhireṇa caadṛśyanta yathā rājanmeghasaṃghāḥ savidyutaḥ
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book