Reading 17 (dormitory)
Moreover, it should be known that no one can be exempt from sleeping in the dormitory, except for a person whom either a great weakness or old age does not allow to ascend the stairs, or who, hindered by physical illness, is not able to rise up from the bed. The abbot also, if only he is well, even if he is worn out by a journey or the letting of blood, shall not be kept back from being compelled to sleep in the dormitory with the brothers.
They shall rest on top of the mattresses in accordance with the first instruction; they can have pillows, without silk and not in different colors, but shining of course only in white, and not stitched together by means of a tie; and similarly [i.e. without silk and not in different colors, but only white] they can have linen sheets; and they shall lay down in shirts and underclothes. They can put their stockings away during the night on account of the inconvenience of worms, yet nevertheless they should never go in or come down from the dormitory without them. A brother rising from bed shall not get up negligently, but neatly extend the blanket on top. A brother who wants to have a bed in the dormitory for his own needs or who wants to change his bed shall not do it freely, but shall accept whichever bed the prior of the ordo commands, and no one shall remove anything from an empty bed without permission.