If two persons clasp hands so as to lock the fingers, bringing the palm of one person against the palm of the other person’s hand, it will break friendship.
Newton, Mass.

If two persons clasp hands so as to lock the fingers, bringing the palm of one person against the palm of the other person’s hand, it will break friendship.
Source: Current Superstitions (1896), entry 1298.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.