Argalā means planetary/sign intervention. I consider this the single greatest teaching of Maharishi Parāśara without which we cannot explain the hidden or subtle influence of a planet in the chart. The magnificent theory of Argalā stipulates the following: –
(a) Every planet has the power to influence the affairs of every other planet or house.
Thus for example, even if a planet has nothing to do with the second house by way of ownership, aspect, conjunction etc, it does not mean that the person shall stop eating food during the daśā of the said planet.