In a dream it is money for whoever eats it or gathers it. The dung of birds whose meat is eaten is unlawful money. Dung that is useful as fuel and the like is provision, especially if it is dry. An abundance of human excrement signifies being hindered from one's undertakings and being drawn into many harms. Being smeared with human excrement is illness or fear, but it is a sign of good for one whose deeds are ugly. Cow dung is a sign of good for farmers and ploughmen, not for others.
Dream meaning · al-Nabulsi
Dung (manure, excrement) زبل
Source: al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam, p. 143. English translation by iDreamBot. Quran verses: Quran.com, Saheeh International.