Police have collared a 26-year-old man in connection with an assault of a rabbi in a Crown Heights park, cops said Thursday.

Oneil Gilbourne allegedly smacked the 64-year-old in the face with a paving stone, knocking out his teeth, while the rabbi was on his morning stroll through Lincoln Terrace Park on Aug. 27, according to police.

Gilbourne was charged with assault as a hate crime and criminal possession of a weapon, cops said.

The encounter started just after 7:40 p.m. when Rabbi Avraham Gopin, father-in-law of popular Hasidic singer Benny Friedman, said Gilbourne hurled a rock in his direction, cops said.

When Gopin, who was wearing a yarmulke, confronted the random man, the man punched him in the face, according to police.

The two struggled until, at one point, Gilbourne took a paving stone and hit Gopin in the face, cops said.