SB 3.29.23

In this verse, two words: bhūtesu baddha-vairasya (b-h-u-t-e-s-u b-a-d-d-h-a v-a-i-r-a-y-a-s-y-a) and dvisataḥ para-kaye (d-w-i-s-a-t-a-h p-a-r-a k-a-y-e). Dvisataḥ para-kaye means "envious of other's body," and bhūtesu baddha-vairasya means "firmly being convinced to think or feel inimically for other bodies." One who is in such situation of mentality, he never gets any happiness. The devotee's vision, therefore, must be very perfect. He should ignorant the bodily distinction. He should see only the presence of the part and parcel of the Supreme Lord and the Lord Himself in His plenary expansion of Supersoul. That is the vision of a pure devotee. The bodily expression of the particular type of a living entity is always ignored by the devotee.

In other words, it is expressed that the Lord is always anxious to deliver the conditioned souls, who have been encaged with this material body to be delivered. And the devotees are expected to carry the message of the Lord or the desire of the Lord to such conditioned souls and enlighten them with Krsna consciousness so that they may be elevated to the transcendental spiritual life and the mission of their life may be successful. Of course, such thing is not possible to living entities lower than the human being, but at least in the human society it is possible that the living entity can be enlightened with Krsna consciousness. Even to the living entities who are less, I mean to say, lower than the human being, they can also be raised in Krsna consciousness by many other methods. For example, Sivananda Sena, a great devotee of Lord Caitanya, he delivered even a dog by taking attention of the dog and supplying him prasadam. So prasadam, distribution of prasadam, or remnant of foodstuff of the Lord, to the ignorant mass of people, even to the animals, gives chance for such living entities to be elevated in Krsna consciousness. And factually it happened that the same dog, when it met Lord Caitanya in Puri, it is understood that he was liberated from material condition.

In other words, it is especially mentioned here that a devotee must be free from all kinds of violence [jivahimsa]. Lord Caitanya has especially recommended that a devotee cannot commit violence to any living entities. Sometimes the question is raised that vegetable, they have got also life. But the devotees take vegetables as their foodstuff, that is all right. But taking some leaves or twigs from a tree or plant does not mean that killing the plant. Taking some fruits from the tree does not mean killing the tree. So... And besides that, jivahimsa means that every living entity has to pass through a particular type of body according to his past karma; and although every living entity is eternal, he should not be disturbed in his gradual evolutionary process. So devotee has to execute exactly the principles of devotional service and must know that however insignificant a living entity may be, there is presence of the Lord. This universal presence of the Lord must be realized by a devotee. That is an essential fact.