Bhagavad Gītā Chapter Eleven verse 1

madanugrahāya paramaṃ guhyam adhyātmasaṃjñitam |
yat tvayoktaṃ vacas tena moho ’yaṃ vigato mama ||

parama - highest, mostadhyātma - inner essencemoha - delusion; error; darkness or delusion of mind; to say anything that leads to error, to fall into error

Commentaries and Reflections

Commentary by T Krishnamacharya:

“The teacher follows the student and will use many methods
to see the student grasps the teachings.”