SB 10.10.9
hanyante pasavo yatra
nirdayair ajitatmabhih
manyamanair imam deham
ajaramrtyu nasvaram
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Unable to control their senses, rascals who are falsely proud of their riches or their birth in aristocratic families are so cruel that to maintain their perishable bodies, which they think will never grow old or die, they kill poor animals without mercy. Sometimes they kill animals merely to enjoy an excursion.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When the modes of passion and ignorance increase in human society, giving rise to unnecessary economic development, the result is that people become involved with wine, women and gambling. Then, being mad, they maintain big slaughterhouses or occasionally go on pleasure excursions to kill animals. Forgetting that however one may try to maintain the body, the body is subject to birth, death, old age and disease, such foolish rascals engage in sinful activities, one after another. Being duskrtis, they completely forget the existence of the supreme controller, who is sitting within the core of everyone’s heart (isvarah sarva-bhutanam hrd-dese ’rjuna tisthati). That supreme controller is observing every bit of one’s activity, and He rewards or punishes everyone by giving one a suitable body made by material nature (bhramayan sarva-bhutani yantrarudhani mayaya). In this way, sinful persons automatically receive punishment in different types of bodies. The root cause of this punishment is that when one unnecessarily accumulates wealth, one becomes more and more degraded, not knowing that his wealth will be finished with his next birth.
na sadhu manye yata atmano ’yam
asann api klesada asa dehah
(Bhag. 5.5.4)
Animal killing is prohibited. Every living being, of course, has to eat something (jivo jivasya jivanam). But one should be taught what kind of food one should take. Therefore the Isopanisad instructs, tena tyaktena bhuñjithah: one should eat whatever is allotted for human beings. Krsna says in Bhagavad-gita (9.26):
patram puspam phalam toyam
yo me bhaktya prayacchati
tad aham bhakty-upahrtam
asnami prayatatmanah
“If one offers Me with love and devotion a leaf, a flower, fruit or water, I will accept it.” A devotee, therefore, does not eat anything that would require slaughterhouses for poor animals. Rather, devotees take prasada of Krsna (tena tyaktena bhuñjithah). Krsna recommends that one give Him patram puspam phalam toyam a leaf, a flower, fruit or water. Animal food is never recommended for human beings; instead, a human being is recommended to take prasada, remnants of food left by Krsna. Yajña-sistasinah santo mucyante sarva-kilbisaih (Bg. 3.13). If one practices eating prasada, even if there is some little sinful activity involved, one becomes free from the results of sinful acts.