《魏书·列传·卷二十一》
说完他的口张开，把玉珠放入他的口中，由于吐出的气聚集在他的口中，没有一点秽气。
言讫齿启，纳珠，因嘘属其口，都无秽气。
After speaking his mouth opened and the jade pearl went into his mouth, because the breath that he exhaled gathered in his mouth, there was not a single foul odor.