Answered by Ustadh Tabraze Azam
Question: If one is awake and he has madhi (pre-sexual fluid) come out of him not mani (ejaculatory fluid) and he wraps toilet paper around himself then sleeps, but when he wakes up he recalls he didn’t wash his private part while awake, is it necessary to wash the entire private parts or just the area where it came out?
Also if one wakes up and remembers madhi came out while awake and he didn’t wash it off before sleeping, is ghusl necessary if the madhi was there whilst awake?
Answer: Assalamu alaikum wa rahmatullahi wa barakatuh,
I pray that this finds you in the best of health and spirits, insha’Allah.
 You only need to wash the area affected by the filth.
 No. Ejaculation (release of mani) requires a ritual bath, not pre-sexual fluid (madhi). See: The Ritual Bath (ghusl): Obligatory, Recommended, and Disliked Acts
And please see related answers in the archives at SeekersGuidance.org
And Allah alone gives success.
Checked & Approved by Faraz Rabbani