Someone who finds a corpse for the first time, lying in its usual manner, may remove it along with its surrounding earth. [If] he found two [corpses], he may remove them along with their surrounding earth. [If] he found three [corpses]: if [the distance] between this one and that one is from four to eight cubits, it is a graveyard zone. He must search from there outward [a distance of] twenty cubits. If he found one at the end of twenty cubits, he searches from there outward [a distance of] twenty cubits, for the matter is indicated, although had he found it at first he would have removed it together with its surrounding earth.

Any doubt concerning afflictions [of tzaraas] at the outset is tahor as long as it has not been confirmed to be tamei. Once it has been confirmed to be tamei, a doubt [is ruled to be] tamei.  A zav is checked in seven ways as long as he has not been confirmed to [be tamei] from zivah —- concerning food, drink, carrying a load, jumping, illness, sight, and thought. Once he has been confirmed [to be tamei from] zivah, we do not examine him —- his mishap, or doubts because of his seminal discharge are tamei, since the matter is indicated.  [If] someone struck his fellow and they assessed that he would die, but [his condition] improved from what it had been. After that, it worsened and he died —- [the attacker] is liable. R’ Nehemiah says: He is exempt, for the matter is indicated.