The story of a Hasidic who permits the violation of Shabbat

On Shabbat I read in a Hasidic composition about the weekly torah,
About a Hasid in a town who became very ill in the middle of Shabbat. They sent a messenger to the Rebbe (his name is mentioned, but I don't remember) who went outside the boundaries of Shabbat to ask for mercy.
When the rabbi (whom he doesn't remember either) heard about this, he asked the rebbe how it was permissible to do this? In the face of a Torah prohibition.
He replied: The words are correct. It is permissible for a doctor to cure a patient who is in danger on Shabbat. And if a doctor about whom it is said: "The doctor was given *permission* to cure," he will cure on Shabbat,
16. To ask for mercy from a righteous person about whom it is said: "He who needs mercy will go to the righteous person" (a quote from some Gemara) in the imperative. He will go!
 
The story was brought to the Hasidim audience without any reservations about the actual law, it seems to be a ruling! For all intents and purposes.
Where do you classify such a provision?
Simple/Midrashic/Reform/Conservative/Other Mutation Interpretation?