《太平广记·卷二百九十一·神一》
忽然，闪出一只像猪的野兽，衔着夜明珠为他照路，那珠光比蜡烛还亮。
有兽状如豕，衔夜明之珠，其光如烛。
Suddenly, a wild beast that looked like a pig appeared, and in its mouth was a night pearl that lit the way for him. It was even brighter than a candle.