Praying in the same garment worn while having intercourse

Q: It is stated in the book Kashf-ul-Ghummah that the Prophet (peace be upon him) used to perform Salah (Prayer) wearing the garment which he sometimes wore while having intercourse or sweating in it. He used to scrub the traces of Maniy (semen) that he might discern on his garment, then would offer Salah in this garment. At other times, he (peace be upon him) would wash it with water then go out to perform Salah in it. (Part No. 4; Page No. 167

A: It is related on the authority of Mu`awiyah (may Allah be pleased with him) that he said: I asked Um Habibah whether the Prophet (peace be upon him) offered Salah wearing the same garment which he wore during intercourse? She said: "Yes, if it had no traces of impurity." (Related by Imam Ahmad, Abu Dawud, Al-Nasa'y and Ibn Majah) It is also authentically narrated on the authority of `Aishah (may Allah be pleased with her) that she said: The Messenger of Allah (peace be upon him) used to wash off the Maniy, and then go out for Salah in that very garment and I saw the mark of washing on it. (Related by Al-Bukhari and Muslim) Muslim also reported on her authority that she said: I used to thoroughly rub it (semen) off the garment of the Messenger of Allah (peace be upon him), then he would pray in it. According to another narration by Muslim: I would scrub it (semen) off his garment with my nail when it had become dry. Hence, the rulings indicated by these Hadith are correct concerning the purity of Maniy, and that there is no harm if its traces remain on the garment when offering Salah, but it is preferable to wash it if it is wet and scrub it if it is dry. All praise be to Allah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.