This refers to a situation where the sun has not dried it. What supports this interpretation is the earlier narration, which states: "If impurity affects the ground, and the sun rises over it and then it dries, there is no harm in praying on it. But if it has not dried, then it is not permissible to pray on it." The Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: There is no harm if a person prays on a mattress that has been affected by semen or other impurities, provided that the place of his prostration is pure. This is supported by (following hadith):