According to Osho, there is no path to eternal light: reality is pathless, the Way is never left, and God/Life is exactly where you are now. Seeking a road creates a desiring mind and leads astray. Sannyas, then, is not a route but a device to open your eyes—living wakefully so even 'darkness' is seen as light, here-now.
Stop searching for a way; wake up now—sannyas just helps you open your eyes to the light already everywhere.