Answer
(Fatwa: 182/D=67/file-D=1432)
Ghusl becomes fardh by ihtilam. The method of fardh ghusl is that first one should wash both the hands and clean impurity then make complete wudhu and pour water on the whole body that not even equal to a single hair from the body is left dry. The fluid discharged before semen is called madhi it only breaks wudhu and does not make ghusl fardh. Hence, if only pre-seminal fluid is discharged, wash the place and offer salah after fresh wudhu. Ghusl becomes wajib by seminal discharge or by penetrating the hashfa (head of penis) inside private part.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband