Which were muslim mystics who believed that they could draw close to god through prayer, fasting, and a simple life

The muslim mystics who lived a life of poverty and simplicity in order to get themselves closer to their God through it were called sufis. Sufism still exists to a certain extent but is not really representative of the muslim religion as a whole. 

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.

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