The Big Dictionary of Dreams

by Martha Clarke
Setting aside the religion or beliefs of the dreamer, dreaming of sin is almost always indicative of a feeling of guilt. Although upon waking you don’t feel at all guilty, your subconscious accusing you, so it is a good idea to investigate the causes to get rid of this sensation.

Dream Dictionary Unlimited

by Margaret Hamilton
Before judging, research type of sin, for it may be figurative instead of literal

Islamic Dream Interpretation

by Ibn Seerin
(Inequity, Wrongdoing) To see one’s movements hampered by sin in a dream means debts.

To confess one’s sins in a dream means dignity and honor.

To commit a sin in a dream means borrowing money.