What is the ruling on a small amount of madhi discharge, and is it permissible to adopt the view of the Malikis that it is among the pardoned impurities, and does madhi transfer if it mixes with sweat?

If madhy (pre-seminal fluid) is discharged once or twice a day, this is not considered incontinence, even according to the Maliki school. Therefore, your Wudu is invalidated by its discharge, and your body and clothes must be purified from it. If madhy mixes with sweat, everything that the contaminated sweat touched must be washed. However, if you doubt the transfer of impurity from one place to another, the default is that it has not transferred. It is advisable to ignore excessive whisperings (waswas) and not pay attention to them.