Skandapurana 1.4.15.35

1.4.15.35

niṣpeṣaṇaṃ tayorbhīmama bhūdganagocaram..
nihatyātha gadāṃ daṇḍastato grasanamūrdhani.. 17.35 ..

The terrible collision of the two took place in the sky. / Then, having struck down the mace, the rod [fell] onto Grasana's head;