Split Tongue
Scholars have said that whoever dreams of their tongue being split and being unable to speak, they might utter words that bring harm upon them. It could also indicate lying, loss for a merchant, or dismissal from authority for an official.
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.