Hadith.5341 - Zurah and Uthman ibn Isa narrated from Samaah, who said
I asked Imam (as) about a man who digs a well in his house or on his land.
Imam (as) said: "If he digs it within his own property, there is no liability upon him. But if he digs it in a public road or in a place that does not belong to him, then he is liable for anything that falls into it."