Is it necessary to change clothes and repeat ablution (wudu') when sometimes clear, odorless drops of water are discharged after urination?

Everything that exits the male organ is impure, except for semen. The fluid that exits after urination is wadyy, and it is impure. Whatever it contaminates must be washed. If it exits after performing wudu’, it invalidates the purification and necessitates repeating wudu’, because purification is nullified by the exit of anything from the private parts.