Mahabharata 94.20

महाभाग कथं यज्ञेष्वागमो नृपते स्मृतः
यष्टव्यं पशुभिर्मेध्यैरथो बीजैरजैरपि

Mahabhaga katham yagyeshvagamo nripate smritah
Yashtavyam pashubhirmedhyairatho bijairajairapi