У дурака в горсти дыра

А fool is wasteful with his money. See Нет в голове, нет и в мошне (H), Счастье без ума - дырявая сума (C) Cf.: A

fool and his gold are soon parted (Am.). A fool and his money are soon parted (Am., Br.). Fools never prosper (Am.). Without wisdom wealth is worthless (Br.)