Berachos 3a - Part 5, Berachos 3b - Part 1

Tanu Rabbanan:

There are 3 reasons one may not enter a ruin:

1. Due to suspicion.

2. Due to collapse.

3. Due to mazikin.

Issue #1: The gemara asks, why say the reason of suspision? Isn't collapse enough? We are speaking about a new ruin. And why not say due to mazikin? Because we are talking about two people entering. If there are two people entering, so why is there any suspicion? Because it's two immodest people.

Issue #2: Why say collapse? Isn't suspicion and mazikin enough? We are talking by two people who are modest.

Issue #3: Why say mazikin? Isn't suspicion and collapse enough? We are talking in a new ruin with two modest people. But if there are two people, there is no problem of mazikin?

Answer #1: We are talking in an area where we suspect mazikin.

Answer #2: Really we are talking about one person in a new ruin that is in the field. There is no suspicion because women don't commonly walk in the field. However, there is a problem of mazikin.