佛說觀佛三昧海經 2.12

2.12

At that time, the hell-wardens numbered eight thousand at the east of the wall, and likewise in the other three directions. The hair of each hell-warden was like a mountain, growing wheel-knives, swords, and halberds. Their ears were like donkey ears of a hundred thousand varieties, with smoke and flames rising together from each ear. Their lips, mouths, and teeth surpassed those of rākṣasas by hundreds of thousands of myriads of times. Their horns were like ox horns with swords growing at the tips, visible differently from the five directions. Their bodies were reddish-black like mangy dogs, with four hundred tails. At the ends of their tails were pus, blood, and boiling feces, with iron wireworms coiled around their bodies. Holding iron pitchforks in their hands, they trod on wheels beneath their feet, the wheel-knives piercing upward straight to the core of their marrows. Swift as the wind, each used iron pitchforks to spear the waists of the sinners and rushed straight upward; the Avīci hell followed them like a shadow following a form, pursuing the sinners as it came.