tesu-in such sacrifices; yajnasya-of the sacrificial performance; pasavah-the animals or the sacrificial ingredients; sa-vanaspatayah-along with flowers and leaves; kusah-the straw; idam-all these; ca-as also; deva-yajanam-the sacrificial altar; kalah-suitable time; ca-as also; uru-great; guna-anvitah-qualified.