the.com/detach
The art of letting go before the rope burns your hands.
means To separate or unfasten something from what it was joined to, physically or emotionally.
from From French detacher, literally to un-attach — the de- undoing the tache, a nail or fastening pin.
Military senseA detachment is troops split off for a mission.
Stoic cousinDetachment as serenity predates the word by centuries.
Opposite kinAttach and detach share the same nail.