Literally "fragrant herbs and foul herbs are not stored in the same vessel"; an idiom meaning that good and bad people cannot coexist or should be kept apart.

good coexists with evil; used as a metaphor for the blurring of distinctions between the good and the bad

Literally "fragrant herbs and stinking weeds must be kept in different containers," meaning that good people and bad people cannot live together or be treated as the same.