It is common to use the term ‘Adrushta’ or Adrishta for Luck,especially in South India.
People use this term when something,auspicious/good happens to them,which they did not expect.
This is incorrect.
Adrishta is not Luck.
Nothing in the Universe,according to Hinduism,without a Cause or Reason.
The term Adrushta means ‘unseen,unexplained’
‘The Sanskrit term, Adrishta (Sanskrit: अदृष्ट), as an adjective means – not seen, unseen, unobserved, unforeseen, unknown, invisible, unexpected, not experienced, destiny, fate, luck, not permitted or sanctioned, illegal, virtue or vice as the eventual cause of pleasure or pain. In Hindu philosophy it refers to the unseen force, and the invisible results of works which accrue to a person; it refers to the Doctrine of Apurva.’
The term Adhrushta has been used colloquially to denote some thing which one can not understand or explain.
When we act or plan,we expect some specific results,though, at times,we might not be aware of some other results that are possible.
We become surprised when the results of our action produces an efffect we have not anticipated.
It that happens to our advantage or benefit,we call it Adrushta.
If the result is unfavourable or disagreeable to us, we call it Destiny,usually in its negative connotation.
Every action we perform gets results.
When we perform an action,we are only a part of the Causes that make the results.
There are other Causes facilitating the completion of the Act.
These Causes also determine the Effect.
We anticipate results based only on our actions and do not take these factors into consideration.
Moreover,there are infinite number of choices for embarking upon an action.
But ,the Choices available to us are limited at any given point of time.
We make choices out of what is available to us as we are not aware of other choices.
Therefore,the Choices we ignored might produce results which we least anticipate.
We call these as due to Adrushta.
In Mimamsa system of Indian Philosophy,Adrushta is the invisible result of a ritual that accrues to a person.
In Vaiseshika school of Thought,Adrushta is the equally invisible negative karmic accrual, as the unknown quality of things and of the soul, and brings about the cosmic order and arranges for soul according to their merits or demerits.Adrishta is all the elements which are not known and verified with the help of the five senses, and which can be realized through mind, intelligence and soul.
However Brahma Sutras do not accept even this.
As they believe in one Reality ,Brahman,they disprove Vaiseshika theory thus.
Patanjali in his Yoga Sutra says,