Letters from Kish as transcribed for sacred writing (7)
I believe the answer is:
shastra
'sacred writing' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?
'letters from kish as transcribed' is the wordplay.
'letters from' indicates the answer is hidden within the clue (a selection of letters from the clue).
'SHASTRA' is hidden in the letters of 'kish as transcribed'.
'for' acts as a link.
Can you help me to learn more?
(Another definition for shastra that I've seen is " Hindu sacred writings".)