俱舍論疏 7.84

7.84

論「依彼頌言至故名魯達羅」，已下引外道頌證為善說。自在苦惱有情發生自喜。「由險利能燒」者，彼外道說有三阿素洛持三國土飛行空中，於自在天下過，其天不耐火箭射之，燒三國土一時俱盡，火箭險利能燒三國。「可畏恒逼害」者，以能貫人髑髏繫其頭頂，又以龍縛臂、殺象取皮，此是可畏恒逼害也。「樂食血肉膸」者，是所食也。「故名魯達羅」者，自在天千名中一名也。此名暴惡。

The treatise says: "Relying on their verse... therefore he is called Rudra." From here on, a verse of the heterodox is cited to corroborate that this is well stated: Īśvara causes suffering to sentient beings to produce his own joy. 'By being fierce and sharp, it can burn' refers to the heterodox account that there were three asuras who held three realms and flew through the air, passing beneath Īśvara; the deva could not bear it, shot them with a fiery arrow, and burned all three realms to nothing all at once—the fiery arrow being fierce and sharp, capable of burning the three realms. 'Dreadful and constantly tormenting' refers to his ability to string human skulls together and bind them around his head, and further to bind his arms with dragons and slay elephants to take their hides—this is dreadful and constantly tormenting. 'Delighting in eating blood, flesh, and marrow' refers to what he consumes. 'Therefore he is called Rudra': this is one name among the thousand names of Īśvara. This name means 'ferocious and evil.'