《北史·本记·卷十二》
他东游西巡，没有定居处所，经常因供给的费用不足而预收几年的赋税，所到之处，也只是和后宫嫔妃们流连光景，寻欢作乐而已，就这样也得不到满足。
东西行幸，靡有定居；每以供费不给，逆收数年之赋。所至，唯与后宫流连耽湎，惟日不足。
He toured the east and the west, never staying in one place. He often collected the taxes of several years in advance because the supplies he needed were insufficient, and wherever he went, he only indulged in pleasures with his concubines in his harem. But that still did not satisfy him.