The incident occurred just before 9:15 p.m. at a building on 1514 W 8th Street.
The 25-year-old victim entered the building and was stabbed once in the chest by two men.
The suspects robbed the victim of his money and moped, which they fled scene on.
The victim was taken to NYU Langone Hospital-Brooklyn where he's expected to survive.
No arrests have been made.
An investigation is ongoing.
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