Why should we do Istibra and how is it done?

Answer

Istibrāʾ is a recommended (mustaḥabb) act performed by men after urinating in order to be confident that no urine is left in the urethra, and its not compulsory to perform. It is performed by the following way: after urinating, the anus is first purified if it has become impure; then, the middle finger of the left hand is slid three times from the anus up to the scrotum; then, the thumb is placed on the penis and the forefinger is placed under the penis, and the thumb and forefinger are pulled three times along the penis up to the point of circumcision; finally, the end of the penis is pressed three times.