One of two for the Ten Commandments (6)
I believe the answer is:
tablet
'one of two for the ten commandments' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tablet that I've seen before include "Handheld personal computer" , "Pill; writing pad" , "pill needed" , "Weekly" , "Small slab or flat pill" .)