Halakhah do Hioba 38:13

Great is the punishment for one who does not fulfill the מצוה of ציצית. Regarding such an individual it is said, that "to hold the ends of the earth [like a garment] [and to shake the wicked out of it]" (Job 38:13). And one who is careful in the מצוה of ציצית will merit and see the face of the Divine Presence.