śreyaḥ param avāpsyatha

devan-demigods; bhavayata-having been pleased; anena-by this sacrifice; te-those; devah-the demigods; bhavayantu-will please; vah-you; parasparam-mutual; bhavayantah-pleasing one another; sreyah-benediction; param-the supreme; avapsyatha-do you achieve.