695. An Intercepted Throw

Shabbos 13:12

If a person picks an object up in one corner of a private domain, intending to put it down in the other corner, transferring the object is permitted. If he changes his mind and carries the object out to the public domain, he is not liable. This is because picking the object up was not done with the intention to transfer it between domains. Therefore, only putting the object down was performed in a prohibited fashion but not picking it up. Similarly, one is not liable if he picks up an object and puts it on the back of another person who is walking, and later removes it from the other’s back when the one who is walking wants to stop. In this case, the uprooting of the item was done in a prohibited fashion but not the putting down.

Shabbos 13:13

One who throws an object from one type of domain (public or private) to the other, or more than four cubits (about six feet) in a public domain is not liable if another person intercepted it, if a dog caught it, or it was consumed by a fire before it came to rest. This is because it was not the thrower’s intention for the object to come to rest this way. If such was his actual intention, then he would be liable.