"It just came from the heart," Resto said. "I don’t know how anyone could have walked past him and had extra clothing and not given it to him."

Joey Resto was taking the train from work to his home in Brooklyn last Friday, when he saw a homeless man shivering and shirtless. Temperatures in New York City had barely reached 40 degrees that day.

"He looked cold, hungry...like he had just gotten beat up," Resto told ABC News.

He gave him not only the shirt off his back, but his hat as well. And it was caught on camera by a fellow passenger. Resto said that he had to help him put it on, or he wouldn't be able to do it himself. His girlfriend says that they are an "altruistic" couple, and that they frequently give money and material items to those in need.

"Do some selfless service for people who are in need. Consider the whole picture, not just our little selves." ~Nina Hagen