By his own account Hazrat Inayat Khan slept little in his later years, and often slept on the floor, but when he was young, he found it hard to resist the comfort of sleep. He told the following anecdote concerning the matter.
I remember that when beginning to get interested in spiritual matters I once asked my teacher, “Murshid, do you approve of my staying up most of the night for my vigils?”
“Whom do you torture?” said my murshid. “Yourself? Is God pleased with it?”
I had not another word to say.