《礼记·丧服小记》
斩衰丧服在卒哭后要改服的葛绖，其粗细与齐衰丧服在卒哭前所服的麻绖相同。
斩衰之葛与齐衰之麻同。
The linen cloth to be changed after the death of the mourning clothes must be the same thickness as the hemp cloth worn before the mourning clothes before the death of the Qiyi mourning clothes.