The Inkwell in the Body
Scholars have said that whoever sees an inkwell within their body and uses it with a pen might have specific indications depending on the dream's context. As for seeing oneself writing on a scroll, it might signify inheriting an inheritance.
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.