翻譯名義集 7.50

7.50

【舍勒】應法師譯云內衣也，半者言舍勒，相短，似今短群也。小衣論雖不顯於相，可類半泥洹也。

[Śāṭaka] Master Ying translates this as undergarment; half a śāṭaka means a short garment, resembling modern short skirts. Although the Xiaoyi lun does not clearly describe its appearance, it may be classed with the half-nivāsana.