Can I use my iPhone 5s hot spot for my iPad Air without celluar & without wifi?

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iphone 5s hot spot for ipad air without celluar & without wifi

My DSL is very slow, ATT celluar connection fast, so I want to tether ipad air (no sim card slot) to iphone 5s, but bluetooth tethering is very slow, and so is my iphone/ipad DSL/wifi (yes, redundant). How do I connect 5s to celluar and 5s to ipad (i.e., preventing iphone from connecting to slow DSL)?

Is there a lightning to lighting cable to do this?