Divergence of a vector

Could any one give mathematical expression for the vector field in the presence of a source/sink such that when the divergence of that vector is calculated, the numerical value matches with the source/sink scalar value multiplied by the volume in which such a scalar quantity is enclosed.

Any modifications in the question are welcome.

Thanks,
krishna prasad sristy
Engineer,
Electronics Corporation of India Limited

http://en.wikipedia.org/wiki/Divergence
Gives the math.

Could you draw that?

Thanks for your time pal. I'm familiar with the math around divergence. I'm looking practical validation of it. Example of a field with sources present in the region whose divergence value matches with the source present in the volume. Correct me if i interpreted your answer wrongly.