One verse

Srimad Bhagavatam 9.6.8

9.6.8

शेषं निवेदयामास पित्रे तेन च तद्गुरु: । चोदित: प्रोक्षणायाह दुष्टमेतदकर्मकम् ॥ ८ ॥

sesam nivedayam asa pitre tena ca tad-guruh coditah proksanayaha dustam etad akarmakam

sesam
the remnants
nivedayam asa
he offered
pitre
to his father
tena
by him
ca
also
tat-guruh
their priest or spiritual master
coditah
being requested
proksanaya
for purifying
aha
said
dustam
polluted
etat
all this flesh
akarmakam
not fit to be used for offering in sraddha.

Vikuksi offered the remnants of the flesh to King Iksvaku, who gave it to Vasistha for purification. But Vasistha could immediately understand that part of the flesh had already been taken by Vikuksi, and therefore he said that it was unfit to be used in the sraddha ceremony.