hand-fastening
/ˈhan(d)ˌfɑːs(ə)nɪŋ/ /ˈhan(d)ˌfɑːsnɪŋ/ /ˈhan(d)ˌfas(ə)nɪŋ/noun
A symbolic binding of hands performed as part of a marriage ceremony, especially among Parsees. Now also with reference to neopaganism, Wicca, etc.
Origin
Old English (in an earlier sense). From hand + fastening.