Sri Aurobindo
Letters of Sri Aurobindo
Volume III - Part 2
Fragment ID: 12541
The vision of the cows must have taken place in the psychic world. It has also a symbolic significance. The sun is the symbol of the Divine Truth, the cows are its powers, rays of the sun, sources of true knowledge, true feeling, true experience.
The descent you felt must have been into some depth of light, probably in the psychic nature.