Bar mitzvah scroll (5)
I believe the answer is:
torah
'bar mitzvah scroll' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for torah that I've seen before include "The body of Jewish sacred writings and tradition" , "The will of God as revealed in Mosaic law" , "Pentateuch" , "Jewish law" , "The whole body of Jewish religious literature" .)