Ja 143 Virocanajātaka
The Story about Shining Forth
In the present Devadatta makes himself out a Buddha, but loses all his disciples in a stroke. The Buddha tells a story of how a jackal wanted to emulate a lion and soon came to destruction.
1. Lasī ca te nipphalitā, matthako ca padālito,
Your brains are split open, and your head is smashed in,
Sabbā te phāsukā bhaggā, ajja kho tvaṁ virocasī ti.
All your ribs are broken, today you did shine forth.
Tattha,
In this connection, brains means brains. The normal word for brain is matthaluṅga, I think lasi in this meaning is only found in this verse.
Nipphalitā ti nikkhantā.
Split open means gone out (of the head).