Likewise...
Likewise, the Qur'an counts polytheism as injustice and vice versa, as may be seen in the words which the Satan shall utter after the judgment will be delivered against him and his followers: . . . surely I disbelieved in your associating me with Allah, before; surely it is the unjust that shall have the painful punishment (14:22) .
Then it counts injustice as straying: Those who believe and do not mix up their faith with injustice, those are they who shall have the security and they are those who shall be guided aright (6:82). It should be noted that they shall be guided aright and shall have security against straying or its resulting punishment only if they do not mix their faith with injustice and inequity.
It is clear from looking at these verses together that going stray, polytheism and inequity all have the same effect; all three are adjunct to each other. That is why it is said that each of them is identifiable by the other two. For all practical purposes the three are one and the same, although they may be different in their literal meaning. The straight path, then, is different from that of those who have gone astray; it is a path which is far away from polytheism and injustice.
There can be no straying in this path - neither in hidden ideas and beliefs (for example, the disbelief or the thoughts disapproved by Allah); nor in open actions or omissions (like committing a sin or omitting a good deed). It is the true monotheism in belief and in deeds. And what is there after the truth but error? The above-mentioned verse 6:82 fits on it completely. That verse guarantees security in the way and promises perfect guidance.
The promise is inferred from the fact that the original word translated as “guided aright” is noun-agent, and the grammarians say that such a noun is really made for future. This is one feature of the straight path.
Allah has identified those bestowed with divine favours, in the verse: And whoever obeys Allah and the Apostle, these are with those upon whom Allah has bestowed favours from among the prophets and the truthful and the martyrs and the righteous ones; and excellent are these as companions (4:69). The belief and the obedience have been explained shortly before it in these words: But no! by your Lord!