राजविद्या राजगुह्यं पवित्रमिदमुत्तमम्। प्रत्यक्षावगमं धर्म्यं सुसुखं कर्तुमव्ययम्॥
rājavidyā rājaguhyaṃ pavitramidamuttamam pratyakṣāvagamaṃ dharmyaṃ susukhaṃ kartumavyayam
Meaning
This is the supreme science, the supreme secret, the purest and best; it is intuitive, righteous, and to those who practice it, it is exceedingly pleasant.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha