Moreover, he that goeth into the house all the while it is
The utmost of which were three weeks, as Jarchi observes; during the time a house was shut up, no man might enter it: if he did, he shall be unclean until the evening;
might not have any conversation with men until the evening was come, and he had washed himself; nay, according to the Misnah F17, if a clean person thrust in his head, or the greatest part of his body, into an unclean house, he was defiled; and whoever entered into a leprous house, and his clothes are on his shoulder, and his sandals (on his feet), and his rings on his hands, he and they are unclean immediately; and if he has his clothes on, and his sandals on his feet, and his rings on his hands, he is immediately defiled, and they are clean.
F17 Misn. Negaim, c. 12. sect. 8, 9.