Srimad Bhagavatam 11.18.07 - An example is better than percept (download mp3)
by Srila Haridas Thakur Prabhu at ISKCON Chowpatty
na tu srautena pasuna
mam yajeta vanasrami
One who has accepted the vanaprastha order of life should perform seasonal sacrifices by offering oblations of caru and sacrificial cakes prepared from rice and other grains found in the forest. The vanaprastha, however, may never offer animal sacrifices to Me, even those sacrifices mentioned in the Vedas.
One who has taken the vanaprastha order of life should never perform animal sacrifices or eat meat.