Mahabharata 13.4.18

तत्तदा गाधये तात सहस्रं वाजिनां शुभम्ऋचीकः प्रददौ प्रीतः शुल्कार्थं जपतां वरः

tattadā gādhaye tāta sahasraṃ vājināṃ śubhamṛcīkaḥ pradadau prītaḥ śulkārthaṃ japatāṃ varaḥ

Our plain-language meaning of this verse is waiting for scholar review.