Islamic Interpretation of Dreams (Ibn-i Sirin):

(Greed) To chew food other than for grinding or eating one’s meal in a dream means an illness or loss of appetite. Chewing gum in a dream means earning money coupled with ugly words that will grow to become a big fight and that will lead to a court appearance.

The source of it all begins with greed.

Anything that is chewed in a dream means an exchange of words.

The only exception to it is chewing a stick of sugar cane in a dream.

In that case, it means lauding someone or hearing pleasing words one desires to hear over and over.

(Also see Chewing food; Chewing gum; Greed)