One verse

Srimad Bhagavatam 7.15.7

7.15.7

न दद्यादामिषं श्राद्धे न चाद्याद्धर्मतत्त्ववित् । मुन्यन्नै: स्यात्परा प्रीतिर्यथा न पशुहिंसया ॥ ७ ॥

na dadyad amisam sraddhe na cadyad dharma-tattvavit muny-annaih syat para pritir yatha na pasu-himsaya

na
never
dadyat
should offer
amisam
meat, fish, eggs and so on
sraddhe
in the performance of the sraddha ceremony
na
nor
ca
also
adyat
one should eat personally
dharma-tattva-vit
one who is actually learned in regard to religious activities
muni-annaih
by preparations made with ghee for saintly persons
syat
should be
para
first-class
pritih
satisfaction
yatha
for the forefathers and the Supreme Personality of Godhead
na
not
pasu-himsaya
by killing animals unnecessarily

A person fully aware of religious principles should never offer anything like meat, eggs or fish in the sraddha ceremony, and even if one is a ksatriya, he himself should not eat such things. When suitable food prepared with ghee is offered to saintly persons, the function is pleasing to the forefathers and the Supreme Lord, who are never pleased when animals are killed in the name of sacrifice.