Shabar mantras owe their perfection into the perfection from the Siddha or perfected master who wrote these mantras. As with all mantras, these mantras as well, move via the person who wrote them or gave them because the word of God. Often as will be the practice in India, https://alainn260oxf1.bloggazza.com/26426358/not-known-details-about-shabar-mantra