Seeing oneself recite Surah Al-Layl or one of its verses, hearing it recited over oneself, or hearing it from another person signifies spending the nights in worship, being honored with abundant worship of one's generous Lord, and doing good to people.
Ibn Kathir said that the dreamer's provision will be limited, that he will be honored with worship night and day, and that he will die as a martyr. Reciting this surah in a dream also signifies safety from calamities and afflictions.