What is the evidence for the ruling of choosing between maniyy (seminal fluid) and madhiy (pre-seminal fluid) when in doubt? And what are the implications if it is maniyy but is given the ruling of madhiy? And is it necessary for maniyy to be discharged in spurts (dafqa) and with pleasure (ladhdha) simultaneously, or is one of them sufficient?

If a person is uncertain whether what came out was maniyy (spermatic fluid) or madhiy (prostatic fluid) and cannot distinguish between them, the fatwa given is to choose between the two. This is the view adopted by the Shafi'is: if he considers it maniyy, he performs ghusl (ritual bath); if he considers it madhiy, he washes the affected area and performs wudu' (ablution). This is because the fundamental principle is the acquittal of responsibility, and certainty is not removed by doubt. However, if it is possible that it is a third substance, other than maniyy or madhiy, then the default is purity, and ghusl or wudu' is not obligatory. The maniyy that necessitates ghusl is that which is discharged with a gush and with pleasure. If it is discharged without a gush or without pleasure, ghusl is not required.