Buying a Fat Head
Interpreters have reported that whoever dreams of buying a large, fat head might indicate benefiting from a useful teacher or mentor. If the head is lean, it may suggest a lack of expected benefit. If the head is putrid, it might indicate receiving unpleasant praise.
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.