The seven senses (prâna) also spring from him, the seven lights (acts of sensation), the seven kinds of fuel (objects by which the senses are lighted), the seven sacrifices (results of sensation), these seven worlds (the places of the senses, the worlds determined by the senses) in which the senses move, which rest in the cave (of the heart), and are placed there seven and seven.

In plain words: Our senses also come from him. So do the act of sensing, the things we sense, and what we experience through them. They are counted in groups of seven and rest in the hidden space of the heart.