The couple, 74-year-old Raghuvir Agrawal and his wife, were waiting on platform number one to board the Delhi-bound Rajdhani Express.
Agrawal, who is wheelchair-bound, told police that someone snatched his purse while he was awaiting the train's arrival.
The purse contained US dollars, two passports and gold and diamond jewellery, police said.
A porter chased the thief but the latter managed to get away, police said.
NI Pandya, Sub-Inspector of the railway police said that a First Information Report had been registered and police teams were scouring CCTV footage from the station to nab the thief.