Qurrah bn ‘Iyyaash (radhiyalLaahu 'anh) narrated:  the Prophet (sallal Laahu 'alayhi wassallam) said:

“Surely bashfulness, modesty and being of few words are part of (traits) Eemaan and they increase one in the gains of the hereafter while decreasing the worldly gains. The increase they would fetch in the hereafter would be more than their decrease in material gains.

-Tabaraanee, Saheeh Targheeb #6230.