Parāçara said—Being thus disappointed of offerings in the sacrifice, O Maitreya, Sakra, greatly angry, addressed the attendant clouds called Samvarttaka saying—"O ye clouds! hear what I say and do ye speedily execute without any judgment my behests. The foolish cow-herd Nanda and his companions, relying upon the protection of Krishna have withheld the usual offerings to us. Now therefore, distress the cattle, with wind and rain at my command, that are their subsistance and whence their occupation is derived. Ascending my elephant, huge as a mountain summit, I will give you assistance in strengthening the tempest".

In plain words: Parashara tells his student Maitreya that Indra, angry at losing his offerings, called the great storm clouds. He ordered them to obey without question and to punish Nanda and the cowherds, who trusted Krishna, by hurting their cattle with wind and rain. Indra said he would ride his huge elephant and help make the storm stronger.