In plain words
The poet, to the Lord: Was it not you who received the water of the gift and measured the worlds with your feet? Was it not you who, intent on guarding them, grazed the herds? Was it not you who broke the strength of the mouth of the horse [Kēśi], went between the great marutam trees [and felled them], and in the war of the gods and the demons fought, destroying [the demons]?