Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Sweeping the house in a dream indicates loss of wealth. If the place is unknown, it indicates death. Sweeping the mosque indicates righteousness in religion.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Sweeping indicates the removal of worry. Sweeping another's house indicates gaining wealth from him.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Sweeping is interpreted as poverty. Whoever sees himself sweep his house will become poor.