The forty-second yoga sutra explains the further conquest of a yogi in the field of air. He is able to hear far-off sounds, which can be established by sarhyama between space and sound.

srotra of hearing
akasayoh in space, ether
sambandha relation
samyamat by performing constraint
jivyam divine
srotram power of hearing

By sarhyama on the relation between space and sound, the yogi acquires the power of hearing distant and divine sounds. The organ of hearing, the ear, grasps sound in space. This is the conquest of air