Additional Sessions Judge Virender Bhat ordered release of the Haryana resident from jail immediately.
The charges were levelled by the woman's husband, who was working as a gardener at the residence of the accused.
"These two witnesses (the woman and her husband) were the star witnesses for the prosecution. They have not supported the case of the prosecution and have not deposed anything incriminating against the accused. Both of them have given a clean chit to the accused," the court said.
The accused was arrested by the police in February 2013, after the victim's husband had lodged a complaint that his wife was raped by the accused.
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The couple said the accused on the day of incident took her to his room on the excuse of stitching curtains and raped her.
"While engaging the victim in talk, the accused bolted the door of the room from inside and raped her. She resisted the accused' attempt but could not stop the sinister act," the police had told the court during the trial.