In a dream it is a servant at whose hands binding and loosing and upright affairs are carried out. The vestibule is the chamberlain or the doorkeeper, or the deed by which one reaches Paradise or the Fire, or the riding animal that brings him to his aim. The vestibule may signify the grave, because it is the vestibule of Paradise or the Fire. It may signify the walking of a sick or crippled person, or the managing of one's livelihood. Its light, spaciousness and beauty signify a good outcome, and its darkness, narrowness and many turns signify a bad outcome.
Dream meaning · al-Nabulsi
Vestibule (entrance passage) دهليز
Source: al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam, p. 111. English translation by iDreamBot. Quran verses: Quran.com, Saheeh International.