What is the ruling on the intention when purifying oneself from madhy (pre-seminal fluid)? Is it obligatory to wash the penis and testicles with the intention of purifying oneself from madhy? And is ghusl for janabah (major ritual impurity) sufficient for purifying oneself from madhy?

Washing the male organ and testicles from madhy (pre-seminal fluid) is one of two narrations from Ahmad. The preponderant opinion is that only the site of impurity must be washed. Intention is not required for washing the male organ and testicles according to Ahmad. As for the Malikis, the relied-upon opinion is that only the entire male organ must be washed, but not the testicles, and with intention. Whoever performs ghusl (ritual bath) from janabah (major ritual impurity) and covers their entire body with water, that suffices for washing the male organ and testicles from madhy. Washing the male organ and testicles—according to the opinion of obligation—is not required immediately; it is like washing any impurity.