Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Praising God (saying SubhanAllah) in a dream indicates salvation from hardships and removal of worry. For the prisoner, it is relief, and for the sick, healing.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Praising God indicates obedience to God. Whoever sees himself praising God will gain authority and high status.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Praising God is interpreted as relief and blessing. Whoever sees himself praising God will be blessed with a righteous son.