See in Reader
551 B
551 B
comes out of his body
This refers to the man's private parts. (See: rc://en/ta/man/translate/figs-euphemism)
he becomes unclean
The person whom other people may not touch is spoken of as if he were physically unclean. (See: rc://en/ta/man/translate/figs-metaphor)
it is unclean
"his body is unclean" or "he is unclean"