It is not permissible for this narration to refer to anything except sweating in the garment due to janabah (ritual impurity) if it occurred from something forbidden. This is because we have already explained that the state of janabah itself does not transfer to the garment. We also mentioned that the sweat of a person in janabah does not render the garment impure. Therefore, the meaning of the narration must refer to sweat from janabah caused by something forbidden, and we interpreted it as such. Moreover, it is possible that the meaning refers to a situation where the garment is affected by impurity. In that case, he should pray in it and then repeat the prayer, as we have explained. The Shaykh (Al-Mufid), may Allah
سبحانه وتعالى support him, said: If a garment is washed from menstrual blood and some stains remain that cannot be removed by washing, then there is no problem in praying in it. However, it is recommended to dye it in a way that removes its color, so that one may pray in it with full purification. This is supported by the verse: "He has not placed upon you in the religion any difficulty." (Surah Al-Hajj
22:78) The traces of menstrual blood may cause hardship for a person and may not be easily removed. Therefore, praying in it was permitted. As for what indicates the recommendation of dyeing the affected area
Commentary #27