經律異相 3.34

3.34

有神藥樹。名曰摩陀祇主厭。天下萬毒不得妄行。有大神蛇身長百二十丈。蛇行索食。有黑頭蟲身長五丈。蟲行道中與蛇相逢。適欲舉頭前斷大蟲。蛇聞藥香屈頭欲走。蛇身羅藥樹。身即中斷分作兩段。頭半生得走。尾便臭爛。諸毒聞此蛇臭。諸惡毒氣皆消滅（出善信經下卷）。

There is a divine medicinal tree named Madhūka [?], which governs the suppression of poisons. The myriad poisons under heaven cannot run rampant. There was a great divine serpent whose body was one hundred and twenty zhang long. As the serpent crawled searching for food, there was a black-headed insect whose body was five zhang long. Crawling along the path, the insect met with the serpent. Just as the serpent was about to raise its head to snap the great insect in two, it smelled the medicinal fragrance and curled its head, wishing to flee. The serpent's body wrapped around the medicinal tree, and its body immediately broke in two, splitting into two segments. The head half remained alive and fled; the tail then rotted with a foul stench. When all poisons smelled the foul stench of this serpent, their evil and poisonous vapors were all extinguished (from the lower fascicle of the *Sūtra on Wholesome Faith*).