《太平广记·卷七十一·道术一》
葛玄正与客人对面坐着吃饭，吃完了漱口，口中的饭全变成了大蜂子，有几百只，飞行时发出声音来。过了很久，葛玄张开口，群蜂又飞回他的口中，葛玄咀嚼它，仍然是饭。
玄因徐徐以腹揩屋栋数十过，还复床上，及下，冉冉如云气。腹粉着屋栋，连日犹在。
Ge Xuan was sitting opposite a guest, eating a meal. After the meal, he rinsed his mouth out, and all of the food in his mouth turned into large wasps, hundreds of them, which flew around making a noise. After a long while, Ge Xuan opened his mouth and the swarm of wasps flew back into his mouth. Ge Xuan chewed on them and they turned back into food.