Does anything descend from the male discharge - either mani (seminal fluid) or madhi (pre-ejaculatory fluid) - without lust during the daytime in Ramadan after interacting with women, invalidate the fast?

Semen is discharged with a gush and invalidates the fast by causing its release. As for madhy (pre-seminal fluid), it is a thin, sticky fluid that is discharged during foreplay or thinking. It does not invalidate the fast, according to the more sound of the two scholarly opinions. It is advisable to avoid speaking with women unnecessarily and to lower one's gaze.