瑜伽師地論略纂 2.87

2.87

Among ghosts, regarding "their mouths are either like iron or like torches": [they are] as small as needles and cannot receive food; vomiting fire like torches, they burn themselves. Their necks mostly have goiters and cannot support themselves, being constantly obstructed; their bellies are huge and cannot be borne, constantly ravenous and hollow, and even if they eat it is hard to fill them. Therefore they experience great suffering.