One verse

Srimad Bhagavatam 11.18.7

11.18.7

वन्यैश्चरुपुरोडाशैर्निर्वपेत् कालचोदितान् । न तु श्रौतेन पशुना मां यजेत वनाश्रमी ॥ ७ ॥

vanyaiś caru-puroḍāśair nirvapet kāla-coditān na tu śrautena paśunā māṁ yajeta vanāśramī

vanyaiḥ
obtained in the forest
caru
with oblations of rice, barley and dāl beans
puroḍāśaiḥ
and sacrificial cakes prepared with wild rice
nirvapet
one should offer
kāla-coditān
ritualistic sacrifices, such as āgrayaṇa, offered according to seasons (āgrayaṇa is the offering of the first fruits that appear after the rainy season)
na
never
tu
indeed
śrautena
mentioned in the Vedas
paśunā
with animal sacrifice
mām
Me
yajeta
may worship
vana-āśramī
one who has gone to the forest, taking the vānaprastha order of life

One who has accepted the vānaprastha 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 vānaprastha, however, may never offer animal sacrifices to Me, even those sacrifices mentioned in the Vedas.