In Bhagavad Gita chapter 3.11, Sri Abhinavagupta talks about a text rahasyashastram
मूल श्लोक:
देवान्भावयतानेन ते देवा भावयन्तु वः।
परस्परं भावयन्तः श्रेयः परमवाप्स्यथ।।3.11।।
(Sri Abhinavagupta commentary on 3.11) य(त)त्र येषां मोक्षप्राधान्यं तैरेव विषयाः सेव्या इत्युच्यते देवानिति। देवाः क्रीडाशीलाः (K क्रीडनशीलाः) इन्द्रियवृत्तयः करणेश्वर्यो देवता रहस्यशास्त्रप्रसिद्धाः ताः अनेन कर्मणा तर्पयत ययासंभवं विषयान् भक्षयतेत्यर्थः।...
Devan etc. Devas : Those that have a tendency of playing i.e., the deities who preside over the organs and who dwell in the senses (or who are nothing but the sensitive faculty of the senses) and who are well-known in the Rahasyasastra. 'You must gratify these deities by this action i.e., feed them compability with sense-objects.
I have been looking for this text Rashasyashastra
since months but couldn't find it anywhere. Does anyone know about this text? What is the full name of this text and who authored it?
I will be very grateful.