Al-Nabulsi says the male sexual organ signifies wealth, children, and lifespan.
Seeing it enlarged without deformity signifies many children and much wealth; seeing it divided into several parts signifies numerous descendants, and into three parts specifically three children. Holding another man's organ signifies money and wealth coming from various directions.
Ibn Sirin says enlargement for a statesman signifies increased power and standing, and for a merchant increased earnings. Removing it by hand and putting it back signifies a son or the return of lost wealth. For a pregnant woman, seeing a male organ signifies a male child.
Seeing it cut off signifies no further sons, while tying a knot in it signifies difficulty in livelihood. Circumcision signifies soundness and beauty in religion.