vainye yajna-pasum spardhann
caramena-by the last one; asvamedhena-by the sacrifice of asvamedha-yajna; yajamane-when he was performing the sacrifice; yajuh-patim-for satisfaction of the Lord of yajna, Visnu; vainye-the son of King Vena; yajna-pasum-the animal meant to be sacrificed in the yajna; spardhan-being envious; apovaha-stole; tirohitah-being invisible.