Is it true that a Guru's instructions to one disciple should be kept secret from others?

No, the notion that a Guru's teachings should be kept secret is directly refuted as an 'imaginary and a meaningless fuss.' According to Chapter 18, this idea is incorrect. The text encourages sharing, stating that not only direct instructions but even insights received in dreams should be told to all for their collective enlightenment. The sage Budhakaushika is presented as proof, as he openly narrated his dream-vision of the Ram Raksha initiation. The Guru's wisdom is compared to a shower of self-bliss that should be partaken of and shared generously.