2 readings from 2 sources.
Der Traumschlüssel (Svapnacintāmaṇi) des Jagaddeva
Whoever gives himself to sleep on dust in a dream, or settles on the bare ground, perishes swiftly.
In the source Wer im Traume auf Staub dem Schlafe sich hingibt, auf dem bloßen Erdboden sich niederläßt, oder im ED wandelt, geht schleunigst zugrunde.
Section Negelein 1912
Ten Thousand Dreams Interpreted; Or, What's in a Dream
To dream of dust covering you, denotes that you will be slightly injured in business by the failure of others. For a young woman, this denotes that she will be set aside by her lover for a newer flame. If you free yourself of the dust by using judicious measures, you will clear up the loss.