成唯識論演祕 2.273

2.273

答：彼唯動意，今此復能動身、語故，故非意業。有云：此思能起身、語所起身、語有所造作。有義：由發動思能起身、語即名造作，身、語是思所造作故。

Answer: That [mental action] only moves the mind, whereas this can furthermore move body and speech; therefore it is not mental action. Some say: This volition can give rise to body and speech, and the arisen body and speech have that which they form and act upon. Another interpretation holds: Because the initiating and moving volition can give rise to body and speech, it is called 'forming and acting', because body and speech are that which is formed and acted upon by volition.