Does madhy (pre-seminal fluid), when discharged unconsciously, invalidate ghusl (ritual bath)?

"Madhy (pre-seminal fluid) nullifies ablution (Wudu') but does not necessitate a ritual bath (Ghusl). Wudu' is invalidated by its emission, whether with habitual pleasure, unhabitual pleasure, or without pleasure. The Maliki school differentiates between its emission with habitual pleasure, for which they require washing it with water, and its emission with unhabitual pleasure or without pleasure, for which they suffice with removing it with a stone or similar object. If its emission is due to incontinence (sals), it is excused."