Skanda Purana 7.20.262

7.20.262

śukreṇāndhakāya pramathānīkanāyakānāṃ paricayapradānam, andhakasya prārthanayā śukreṇāsurabale parvatavyūharacanam . mahādevājñayā bṛhaspatinā pramathānīke vajravyūharacanam .

Śukra's introduction of the leaders of the pramatha army to Andhaka; at Andhaka's request, Śukra's formation of the mountain-array among the asura forces. At Mahādeva's command, Bṛhaspati's formation of the thunderbolt-array among the pramatha forces.