But there is also the self, drawing breath, in    
whirlpools aplenty,
Every oyster is a circle of the eye filled with  
And every wave points towards the Beloved's  
eyebrow - the symbol of reality.

Hazrat Abu Said bin Ab'il Khair  (from 'Abu Said Ab'il Khair
and his Rubaiyat'
by Dr Z.H. Sharib

When the mystic dives deep within the ocean of  
his own existence even his own breathing seems
like a whirlpool. He may find many 'oysters' (the
outer manifestations, or forms) within which are
pearls - inner spiritual essence. The outer forms
are linked to grief since their form separates them
Essence is frequently by means of suffering (from
separation) or 'tears'.
The very existence of the outward manifestation
however points to the existence of a  hidden
reality, just as the waves of the ocean are a
manifestations of the ocean. In them the ocean
takes specific temporary forms before returning
into itself. The existence of the wave is an
indicator of the hidden reality of the ocean - a
sign. Similarly the events and forms manifest in life
are indicators of the existence of an unseen