'Justice, Equity and Good Conscience' is the main Secondary Source of Indian Law. Explain it.

The concept of "justice, equity and good conscience" was introduced by Impey's Regulations of 1781. In personal law disputes, the courts are required to apply the personal law of the defendant if the point at issue is not covered by any statute or custom. In the absence of any rule of a statutory law or custom or personal law, the Indian courts apply to the decision of a case what is known as "justice, equity and good conscience", which may mean the rules of English Law in so far as they are applicable to Indian society and circumstances. The Ancient Hindu Law had its own versions of the doctrine of justice, equity and good conscience. In its modern version, justice, equity and good conscience as a source of law, owes its origin to the beginning of the British administration of justice in India. The Charters of the several High Courts established by the British Government directed that when the law was silent on a matter, they should decide the cases in accordance with justice, equity and good conscience. Justice, equity and good conscience have been generally interpreted to mean rules of English law on an analogous matter as modified to suit the Indian conditions and circumstances. The Supreme Court has stated that it is now well established that in the absence of any rule of Hindu Law, the courts have authority to decide cases on the principles of justice, equity and good conscience unless in doing so the decision would be repugnant to, or inconsistent with, any doctrine or theory of Hindu Law.