"In studying nature you might have thought about the source of rain and how does it come thence? Yes, the source of rain is the ocean, but in this connection the miracles of the sun are very wonderous and great. The sun emits and rediates its hot rays on the surface of the ocean and rarifies the dense stock of water, and then raises it in the form of clouds through evaporation and then causes it to spread in the atmosphere. In this process apparently the wind also helps, but in reality the very movement of the wind is due to the sun itself. Thus it is the sun itself which does all this work and as a result of which the rain falls.
 
The same is the case of a spiritual rainfall upon a mu'min which is caused entirely through the light of sun of the spiritual world. Thus imagination, remembrance, thinking and love of the light of Imamat are such as if the resplendent rays of the spiritual sun are falling on the surface of the ocean of the mu'min's existence, thereby the sky of the heart and the mind are overcast with dark clouds of the feelings and emotions of the luminous (noorani) didar, and through the eyes the rain of pearls begins to fall, wherein lies the prosperity of the spirit and spiritualism.."
 

Studies in Dream and Spiritualism, p.26