Dal is a letter of the Arabic alphabet with a numeric value of 4. According to the Sufis and in the contemplations of the Hurufi it symbolizes the equilibrium of all things created. Because of all this and also because it is the initial letter of the verb daaba fi aaw ‘alaa (to work; to labour; to be committed; to make an effort in something for someone; to work with commitment, to do something with effort; to labour unceasingly; to apply oneself; to dedicate oneself; to be constant; to become accustomed to) in the esoterical world this letter represents the earthly condition... http://www.chishti.ru/s_m.htm#sin