Police also stated that a sealed envelope was recovered from Dharmesh when he was arrested. He was supposed to hand over the envelope to someone in Ahmedabad.
The Surat-based sisters in their complaints charged Narayan Sai and Asaram of rape, sexual assault, illegal confinement and other charges.
The elder of the two sisters has accused Asaram of repeated sexual assaults between 1997 and 2006 during the time she had been living in his ashram on the outskirts of Ahmedabad city.
The younger of the two sisters had filed a complaint against Sai, accusing him of repeated sexual assaults between 2002 and 2005 when she was living in their Surat ashram.
Asaram, 72, was brought to Ahmedabad last week on a transit remand from a court in Jodhpur, where he was lodged in a jail since August in another sexual assault case.