There are a number of incidents where the Prophet salla Allahu alaihi wa sallam had spitted in various wells! However,  none of the companions, may Allah be pleased with them, had ever sought blessings from such wells.

Is it true about the well of Bir Al-Rowha where people say its a well where Mohammad p.b.u.h mix his saliva in the well and it has some curing properties? Is ot authentic? Whats the true story?