Gathering Sand
Scholars have said that whoever sees themselves scooping, gathering, or carrying sand might accumulate wealth and attain good fortune. Walking in sand indicates dealing with a demanding and preoccupying task, commensurate with the amount of sand. Hills and mounds made of earth may refer to high-ranking individuals.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.