@Jonathan Safa, unfortunately I tend to lean on the side that its the tenants responsibility. My reasons are as follows:
-The landlord is not the gas supplier.
-The landlord may not have even been the person who shut the gas off.
-Everything in the house functions as it should, which falls under the landlord's job.
-In almost every jurisdiction, the landlord and tenant, are both not allowed to tamper with the meters or turn their own gas on.
...with that being said, the landlord should not have advised you to play with the meter. He's not thinking that through clearly. That's a crime, to me its like saying go be a crack dealer to pay me rent in hard times. The landlord should have advised you that their is no gas on at the moment so you can delay move in or get those arrangements squared away by the time you move in. To my understanding, that is not required, but to me that falls under common courtesy.
Real world situation - I rented out my condo to someone, we delayed move in until the 15th. I told him at lease signing, he can use the property until the 15th for moving stuff in and getting it set up so he is ready to go by the 15th (I'm an easy going guy). I also advised him that the gas and electric were under my name and I called them and notified them that effective the 15th to terminate my relationship with them and send final bill. I advised the tenant he has to call and notify them that he will take over the gas and eclectic by the 15th so they can covert it over (in NY, this is a simple phone call). Long story short, he didn't call. They shut the gas off and it took two weeks to get back on. My tenant realized this was his fault and I gave him more than two weeks warning. I did not refund any part of his rent.
I know your situation is different and you had no warning, but I don't know why you didn't ask about this before the lease was signed. This is something that should have been brought up when you looked at the place and saw no gas and/or electric. Should he have notified you, I'd say yes. Is he required to notify you, I don't believe so. I'm not a lawyer and the only thing I know about OK is it's very flat but I don't believe you have any legal recourse here or right to with hold rent. In fact, I'm pretty sure a tenant never has any right to withhold rent even if the property is uninhabitable. At least they don't in NY, and if they don't in NYC, a tenant friendly city, I doubt they do any where else.