«السائمة جبار والجب جبار والمعدن جبار وفي الركاز الخمس»
The Prophet (peace and blessings be upon him) said:
"The grazing animal (the compensation for damage it causes) is waived, the well (if harm occurs by falling into it, that) is waived, the mine (if an accident occurs in it, that) is waived, and on buried treasure there is one-fifth (as zakah)."
Hadith Referenceصحیح الجامع الصغیر / حرف السين / 3679