Offering Salah in a Masjid under which sewage passes

Q: There is a Masjid (mosque) that has been built and then expanded by some beneficent people. However, some sewage pipes run at a distance of eighty centimeters below the Masjid. Is it permissible to leave these pipes under the Masjid and to offer Salah (Prayer) in it?

A: It is permissible to offer Salah in the Masjid or on the land, even if the sewage passes under it, as long as nothing comes out (Part No. 5; Page No. 238) to stain the place where people offer Salah.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.