In plain words
It would be better in this world to live on alms than to kill these great teachers. If I kill these teachers, who desire wealth, I would enjoy here only pleasures stained with blood.
Word for word
Not killing the high-souled teachers, it is indeed better to eat even alms-food here in [this] world; but having killed the teachers, desirous of wealth, I would enjoy here itself enjoyments smeared with blood.