If they were both closing or opening [a door], [the clean person and his clothes are unclean]. But the sages say: [he is not unclean] unless one was shutting and the other opening [it]. If one was lifting the other out of a pit [the clean person and his clothes are unclean]. Rabbi Judah says: only if the clean person was pulling out the unclean one. If they were twisting ropes together [the clean person and his clothes are unclean]. But the sages say: unless the one pulled one way and the other pulled the other way. If they were both weaving together, whether they were standing or sitting, or grinding wheat, [the clean person and his clothes are unclean]. Rabbi Shimon says [the clean person] in every case is pure, except where they [both] were grinding with a hand-mill. If they [both] were unloading or loading a donkey, they are unclean if the load was heavy, but clean if the load was light. In all cases, however, they are clean for members of the synagogue, but are unclean for terumah.