第 2 句因包含“希夷”，据此推断可能引用了典故：希夷
译《鲁拜集》 其五十 现当代 · 黄克孙
七言绝句　押支韵
真伪由来爽一丝，元真故故在希夷。
凭君参尽人天理，得见天心未可知。
注：A Hair perhaps divides the False and True;
Yes; and a single Alif were the Clue —
Could you but find it — to the Treasure-house,
and peradventure to The Master too;