Who said that the source of law is “any fact which in accordance with law, determines the judicial…

Salmond distinguishes a legally recognized source of law from a merely historical influence on its content. A legal source is a fact whose effect under the legal system is to secure judicial acceptance of a new rule for future administration of justice. For example, legislation or precedent can operate through recognized law-producing processes. The definition therefore concerns the authorized route by which a rule becomes law, rather than simply the social ideas or events that inspired it. This is Salmond's formulation.