The Door Ring
Interpreters mention that whoever sees himself removing his door's ring (knocker), it may indicate his involvement in an innovation (bid'ah). Furthermore, the blockage of a house door is interpreted as a great calamity befalling the household.
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.