The Mishnah taught that they inquired along seven lines before they determined that a genital discharge rendered a man unclean. A discharge caused by one of these reasons did not render the man impure or subject him to bringing an offering. They asked: (1) about his food, (2) about his drink, (3) what he had carried, (4) whether he had jumped, (5) whether he had been ill, (6) what he had seen, and (7) whether he had obscene thoughts. It did not matter whether he had had thoughts before or after seeing a woman. Rabbi Judah taught that the discharge would not render him unclean if he had watched animals having intercourse or even if he merely saw a woman's dyed garments. Rabbi Akiva taught that the discharge would not render him unclean even if he had eaten any kind of food, good or bad, or had drunk any kind of liquid. The Sages exclaimed to Rabbi Akiva that according to his view, no more men would ever be rendered unclean by genital discharge. Rabbi Akiva replied that one does not have an obligation to ensure that there exist men unclean because of a genital discharges.