The accused, identified as Prem Singh Parmar, was arrested last night.
Police said Parmar, earlier working with a temple in Cotton Green area, had allegedly been raping the woman since 2013.
A police official said Parmar became friendly with the woman when she used to visit the temple.
Parmar, a resident of Kalbadevi in South Mumbai, allegedly called the woman to his house in 2013 under the pretext of offering her a "special prasad".
He then spiked her drink and snapped her nude photos with him while she was unconscious, police said.
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The official said the accused had also sent abusive text messages to the woman.
The woman finally confided in her husband about the ordeal, following which a complaint was lodged at Gamdevi police station last night.
Parmar has been booked under various sections of IPC including rape, outraging modesty of a woman and criminal intimidation.
He was produced before a local court today which remanded him in police custody for five days.