In Islamic law, free gift of nature not owned by anybody or anything which is free to be used by public.
Nazir al-suq
Shafi‘ jar
Al-‘ariyah al-madmunah
Mufti
Rahn
Khiyar tafarruq al-safaq
Ghasb
Qard hassan
Bai‘ al-laban fi duru‘ al-’an‘am
Al-mil