What is the ruling on the yellow fluid that comes out of a man, and must it be washed or can it be left and prayer performed?

If a fluid exits from either of the two private parts, it is impure and must be washed, and it nullifies ablution. However, if it exits from other parts of the body and is pus, there is a difference of opinion regarding its impurity and whether it nullifies ablution. The more cautious approach is to consider it impure and nullifying ablution if it is abundant.