Some people may dream during Ramadan that they commit evil and wicked deeds. Do such dreams affect the validity of their Sawm (Fast)?
If the case is as you mentioned and these evil deeds are merely dreams, then the validity of one's Sawm will not be affected and its reward will not be decreased. Allah has ordained that in such a case, when the person awakens they should spit three times towards the left side, seek refuge with Allah from Satan and from the evil of what they saw three times, and then turn and sleep on the other side. Moreover, they should not tell anybody about what they saw in their dream. If they do all these things, nothing bad will affect them. This is what the Prophet (peace be upon him) advised whenever someone sees a bad dream.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.