सिर हथेली पर रखना sir hathēlī par rakhnā

हथेली hathēlī (hindi)

Palm of the hand.

पर par (hindi)

पर denotes :

• Location or position on or upon or at something.
• Point of time at which an action takes place.
• Sequence of actions of happenings.
• Cause or reason.
• Objects of (compound) Verbs signifying mercy, faith, confidence, anger etc.
  (A Basic Grammar of Modern Hindi)

रखना rakhnā (hindi)

To put, to place, to keep, to possess, to have, to employ, to appoint.

सिर sira sir (nm) head; top, apex; highest part or point. —झुकाना to bow the head (in saltation); to look down through shame; to acquiesce. —हथेली पर धरना/रखना to be ever-ready to face death, to be never scared of death