Must one wash the clothes worn during sexual intercourse, or can one pray in them without washing?

Clothes affected by madhy (pre-seminal fluid) must have the contaminated area washed before prayer, or the entire garment if the location of the impurity is indistinguishable. However, if the garment is not affected by the impurity of madhy, or if it is affected by maniy (seminal fluid), it is pure, but it is recommended to wash maniy to avoid scholarly disagreement. In case of doubt regarding purity, refer to the relevant fatwas.