2:67
وَإِذْ قَالَ مُوسَى لِقَوْمِهِ إِنَّ اللَّهَ يَأْمُرُكُمْ أَنْ تَذْبَحُوا بَقَرَةً قَالُوا أَتَتَّخِذُنَا هُزُوًا قَالَ أَعُوذُ بِاللَّهِ أَنْ أَكُونَ مِنَ الْجَاهِلِينَ
2:68
قَالُوا ادْعُ لَنَا رَبَّكَ يُبَيِّنْ لَنَا مَا هِيَ قَالَ إِنَّهُ يَقُولُ إِنَّهَا بَقَرَةٌ لا فَارِضٌ وَلا بِكْرٌ عَوَانٌ بَيْنَ ذَلِكَ فَافْعَلُوا مَا تُؤْمَرُونَ
2:69
قَالُوا ادْعُ لَنَا رَبَّكَ يُبَيِّنْ لَنَا مَا لَوْنُهَا قَالَ إِنَّهُ يَقُولُ إِنَّهَا بَقَرَةٌ صَفْرَاءُ فَاقِعٌ لَوْنُهَا تَسُرُّ النَّاظِرِينَ
2:70
قَالُوا ادْعُ لَنَا رَبَّكَ يُبَيِّنْ لَنَا مَا هِيَ إِنَّ الْبَقَرَ تَشَابَهَ عَلَيْنَا وَإِنَّا إِنْ شَاءَ اللَّهُ لَمُهْتَدُونَ
2:71
قَالَ إِنَّهُ يَقُولُ إِنَّهَا بَقَرَةٌ لا ذَلُولٌ تُثِيرُ الأَرْضَ وَلا تَسْقِي الْحَرْثَ مُسَلَّمَةٌ لا شِيَةَ فِيهَا قَالُوا الآنَ جِئْتَ بِالْحَقِّ فَذَبَحُوهَا وَمَا كَادُوا يَفْعَلُونَ
Finally we come to the eponym of this chapter, the cow. It seems the cow is a metaphor showing the absolute apex of civilisation. At first musa command them to sacrifice her and they asked, do you make us disgraced or contemptible. In other words, by sacrificing this apex, they will become like what we know today to be third world nations.
2/68 shows the peak of the cow’s age. It is neither settled/old nor young, the awan shows that it has reached its peak but not begun to decline.
2/69 shows the cow is pleasing for those who see her. Again it alludes to the pleasing richness of their civilisation perhaps in terms of physical achievements.
2/70 shows their inability or unwillingness to understand what the baqarah is. Perhaps it’s the sheer incomprehensibility of sacrificing one’s nation for the sake of Allah
2/71 is musa’s final instruction, that the cow is the musallamah, that is not dhalal (humiliated) or plowing through the earth. This shows the state of ease in their society. They are to sacrifice although the almost did not.