Shirk is injustice

وَإِذْ وَٰعَدْنَا مُوسَىٰٓ أَرْبَعِينَ لَيْلَةًۭ ثُمَّ ٱتَّخَذْتُمُ ٱلْعِجْلَ مِنۢ بَعْدِهِۦ وَأَنتُمْ ظَٰلِمُونَ

And remember We appointed forty nights for Moses, and in his absence ye took the calf (for worship), and ye did grievous wrong.

وَإِذْ قَالَ مُوسَىٰ لِقَوْمِهِۦ يَٰقَوْمِ إِنَّكُمْ ظَلَمْتُمْ أَنفُسَكُم بِٱتِّخَاذِكُمُ ٱلْعِجْلَ فَتُوبُوٓا۟ إِلَىٰ بَارِئِكُمْ فَٱقْتُلُوٓا۟ أَنفُسَكُمْ ذَٰلِكُمْ خَيْرٌۭ لَّكُمْ عِندَ بَارِئِكُمْ فَتَابَ عَلَيْكُمْ ۚ إِنَّهُۥ هُوَ ٱلتَّوَّابُ ٱلرَّحِيمُ

And remember Moses said to his people: "O my people! Ye have indeed wronged yourselves by your worship of the calf: So turn (in repentance) to your Maker, and slay yourselves (the wrong-doers); that will be better for you in the sight of your Maker." Then He turned towards you (in forgiveness): For He is Oft-Returning, Most Merciful.

وَظَلَّلْنَا عَلَيْكُمُ ٱلْغَمَامَ وَأَنزَلْنَا عَلَيْكُمُ ٱلْمَنَّ وَٱلسَّلْوَىٰ ۖ كُلُوا۟ مِن طَيِّبَٰتِ مَا رَزَقْنَٰكُمْ ۖ وَمَا ظَلَمُونَا وَلَٰكِن كَانُوٓا۟ أَنفُسَهُمْ يَظْلِمُونَ

And We gave you the shade of clouds and sent down to you Manna and quails, saying: "Eat of the good things We have provided for you:" (But they rebelled); to us they did no harm, but they harmed their own souls.

فَبَدَّلَ ٱلَّذِينَ ظَلَمُوا۟ قَوْلًا غَيْرَ ٱلَّذِى قِيلَ لَهُمْ فَأَنزَلْنَا عَلَى ٱلَّذِينَ ظَلَمُوا۟ رِجْزًۭا مِّنَ ٱلسَّمَآءِ بِمَا كَانُوا۟ يَفْسُقُونَ

But the transgressors changed the word from that which had been given them; so We sent on the transgressors a plague from heaven, for that they infringed (Our command) repeatedly.

۞ وَلَقَدْ جَآءَكُم مُّوسَىٰ بِٱلْبَيِّنَٰتِ ثُمَّ ٱتَّخَذْتُمُ ٱلْعِجْلَ مِنۢ بَعْدِهِۦ وَأَنتُمْ ظَٰلِمُونَ

There came to you Moses with clear (Signs); yet ye worshipped the calf (Even) after that, and ye did behave wrongfully.

وَمِنَ ٱلنَّاسِ مَن يَتَّخِذُ مِن دُونِ ٱللَّهِ أَندَادًۭا يُحِبُّونَهُمْ كَحُبِّ ٱللَّهِ ۖ وَٱلَّذِينَ ءَامَنُوٓا۟ أَشَدُّ حُبًّۭا لِّلَّهِ ۗ وَلَوْ يَرَى ٱلَّذِينَ ظَلَمُوٓا۟ إِذْ يَرَوْنَ ٱلْعَذَابَ أَنَّ ٱلْقُوَّةَ لِلَّهِ جَمِيعًۭا وَأَنَّ ٱللَّهَ شَدِيدُ ٱلْعَذَابِ

Yet there are men who take (for worship) others besides Allah, as equal (with Allah): They love them as they should love Allah. But those of Faith are overflowing in their love for Allah. If only the unrighteous could see, behold, they would see the penalty: that to Allah belongs all power, and Allah will strongly enforce the penalty.

فَقُطِعَ دَابِرُ ٱلْقَوْمِ ٱلَّذِينَ ظَلَمُوا۟ ۚ وَٱلْحَمْدُ لِلَّهِ رَبِّ ٱلْعَٰلَمِينَ

Of the wrong-doers the last remnant was cut off. Praise be to Allah, the Cherisher of the worlds.

ٱلَّذِينَ ءَامَنُوا۟ وَلَمْ يَلْبِسُوٓا۟ إِيمَٰنَهُم بِظُلْمٍ أُو۟لَٰٓئِكَ لَهُمُ ٱلْأَمْنُ وَهُم مُّهْتَدُونَ

"It is those who believe and confuse not their beliefs with wrong - that are (truly) in security, for they are on (right) guidance."

فَمَا كَانَ دَعْوَىٰهُمْ إِذْ جَآءَهُم بَأْسُنَآ إِلَّآ أَن قَالُوٓا۟ إِنَّا كُنَّا ظَٰلِمِينَ

When (thus) Our punishment took them, no cry did they utter but this: "Indeed we did wrong."

وَإِذْ قَالَ لُقْمَٰنُ لِٱبْنِهِۦ وَهُوَ يَعِظُهُۥ يَٰبُنَىَّ لَا تُشْرِكْ بِٱللَّهِ ۖ إِنَّ ٱلشِّرْكَ لَظُلْمٌ عَظِيمٌۭ

Behold, Luqman said to his son by way of instruction: "O my son! join not in worship (others) with Allah: for false worship is indeed the highest wrong-doing."