A man was stabbed by another guy in a bathroom at the Port Authority Bus Terminal on Sunday morning, sources said.

Cops were investigating whether the victim may have been involved with the suspect’s mom, sources said.

Morris Hinton, 44, was knifed four times in a first-floor bathroom near the Greyhound terminal around 6:40 a.m., sources said.

The victim was preparing to board a bus to Georgia when 22-year-old suspect Aazim Green pulled out a knife and stabbed him, sources said.

Hinton was rushed to Bellevue Hospital in stable condition, and Green was arrested at the scene, sources said.

GREEN is charged with: attempted murder; assault; unlawful imprisonment and criminal possession of a weapon, according to police.