The Seal
Scholars have said that seeing a seal (الطابع) in a dream indicates gaining authority and governance. If one sees a king stamping with his seal, it may signify obtaining powerful and unopposed authority and influence. If one sees himself sealing clay for another man, the person for whom it is sealed may gain authority from the owner of the seal.
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.