It is fitting.[1]
It has 4 meanings.[2] Instead of χρή ["one must"]. And instead of "there is need". "There is need of money [δεῖ χρημάτων ], and without these things there will be nothing of what is needed."[3] And instead of "He/she/it binds" [δεσμεῖ ].[4] And δέει uncontracted instead of "he is without".
And in Aristophanes, δεῖ , instead of "bind". "Bind her hands behind her."[5]