Skandapurana 5.34.12

5.34.12

tataḥ śakraṃ samuddiśya gadāṃ gurvīṃ mumoca saḥ ..
sarvāyasamayīṃ raudrāṃ yamajihvāmivāparām .. 12 ..

Then, aiming at Śakra, he hurled a heavy mace / made entirely of iron, dreadful, like a second tongue of Yama.