Commentary for Ketubot 48:11

תיבעי למ"ד מעלין הני מילי תרומה דעון מיתה היא אבל נשיאות כפים דאיסור עשה לא או דלמא לא שנא

Ask it according to him who says [that] they raise: This is said in the case of terumah, which [if eaten by one who is not a kohen] is punishable with death; but [in the case of] “lifting up the hands,” which is only the prohibition of a positive commandment, [I would say] no. Or perhaps there is no difference.

Rashi on Ketubot