Chapter XIII. How wrong it is considered for any one to say that anything, however trifling, is his own. Among their other practices I fancy that it is unnecessary even to mention this virtue, viz., that no one is allowed to possess a box or basket as his special property, nor any such thing which he could keep as his own and secure with his own seal, as we are well aware that they are in all respects stripped so bare that they have nothing whatever except their shirt, cloak, shoes, sheepskin, and rush mat; 768 for in other monasteries as well, where some indulgence and relaxation is granted, we see that this rule is still most strictly kept, so that no one ventures to say even in word that anything is his own: and it is a great offence if there drops from the mouth of a monk such an expression as “my book,” “my tablets,” “my pen,” “my coat,” or “my shoes;” and for this he would have to make satisfaction by a proper penance, if by accident some such expression escaped his lips through thoughtlessness or ignorance. 768     Psiathium . The rush mats which served as a seat by day and a bed by night for the monks. See Book V. xxxv., and the Conferences I. xxiii.; XV. i.; XVII. iii.; XVIII. xi. S. Jerome mentions it in his preface to the Rule of Pachomius as one of the very few articles contained in the cells of the monks of Tabenna. “They have nothing in their cells except a mat and what is described below: two ‘lebitonaria,’ a kind of garment without sleeves which the Egyptian monks use (the colobium, or shirt), one old one for sleeping or working, a linen garment and two hoods, a sheepskin, a linen girdle, shoes, and a staff.”