Surah Al-Baqarah — Verse 54

Also, remember that Allah’s allowing you to ask His forgiveness for worshipping the calf, when Moses (peace be upon him) told you that you had wronged yourselves by taking the calf as a god and worshipping it, were from the blessings of Allah. Moses told you to ask for forgiveness and repent to your Creator by some of you killing others, because turning to Him in this way was better for you than persisting in disbelief, which would lead to an eternity in the fire of Hell. So, you did this with Allah’s approval, and He forgave you, for He is Forgiving and Merciful with His servants.

And (remember) when Musa said to his people: "O my people! Verily, you have wronged yourselves by worshipping the calf. So turn in repentance to your Creator and kill yourselves (the innocent kill the wrongdoers among you), that will be better for you with your Creator." Then He accepted your repentance. Truly, He is the One Who accepts repentance, the Most Merciful (54)

This was the repentance required from the Children of Israel for worshipping the calf. Commenting on Allah's statement;

وَإِذْ قَالَ مُوسَىٰ لِقَوْمِهِ يَا قَوْمِ إِنَّكُمْ ظَلَمْتُمْ أَنفُسَكُم بِاتِّخَاذِكُمُ الْعِجْلَ

(And (remember) when Musa said to his people: "O my people! Verily, you have wronged yourselves by worshipping the calf...), Al-Hasan Al-Basri said, "When their hearts thought of worshipping the calf,

وَلَمَّا سُقِطَ فِي أَيْدِيهِمْ وَرَأَوْا أَنَّهُمْ قَدْ ضَلُّوا قَالُوا لَئِن لَّمْ يَرْحَمْنَا رَبُّنَا وَيَغْفِرْ لَنَا

(And when they regretted and saw that they had gone astray, they (repented and) said: "If our Lord does not have mercy upon us and forgive us")(7:149). This is when Musa said to them,

يَا قَوْمِ إِنَّكُمْ ظَلَمْتُمْ أَنفُسَكُم بِاتِّخَاذِكُمُ الْعِجْلَ

(O my people! Verily, you have wronged yourselves by worshipping the calf...)." Abu 'Al-'Aliyah, Sa'id bin Jubayr and Ar-Rabi' bin Anas commented on,

فَتُوبُوا إِلَىٰ بَارِئِكُمْ 

(So turn in repentance to your Bari') that it means, "To your Creator." Allah's statement,

إِلَىٰ بَارِئِكُمْ 

(to your Bari' (Creator)) alerts the Children of Israel to the enormity of their error and means, "Repent to He Who created you after you associated others with Him in worship."

An-Nasa'i, Ibn Jarir and Ibn Abi Hatim recorded Ibn 'Abbas saying, "Allah told the Children of Israel that their repentance would be to slay by the sword every person they meet, be he father or son. They should not care whom they kill. Those were guilty whom Musa and Harun were not aware of their guilt, they admitted their sin and did as they were ordered. So Allah forgave both the killer and the one killed." This is part of the Hadith about the trials that we will mention in Surat Ta Ha, (20) Allah willing.

Ibn Jarir narrated that Ibn 'Abbas said, "Musa said to his people,

فَتُوبُوا إِلَىٰ بَارِئِكُمْ فَاقْتُلُوا أَنفُسَكُمْ ذَٰلِكُمْ خَيْرٌ لَّكُمْ عِندَ بَارِئِكُمْ فَتَابَ عَلَيْكُمْ ۚ إِنَّهُ هُوَ التَّوَّابُ الرَّحِيمُ

("So turn in repentance to your Creator and kill each other (the innocent kill the wrongdoers among you), that will be better for you with your Creator." Then He accepted your repentance. Truly, He is the One Who accepts repentance, the Most Merciful.)

Allah ordered Musa to command his people to kill each other. He ordered those who worshipped the calf to sit down and those who did not worship the calf to stand holding knives in their hands. When they started killing them, a great darkness suddenly overcame them. After the darkness lifted, they had killed seventy thousand of them. Those who were killed among them were forgiven, and those who remained alive were also forgiven."

This verse describes the special mode of offering their Taubah توبہ (repentance) which was prescribed for the Israelites in this situation, -- that is to say, those who had not indulged in the worship of the golden calf should execute those who had. Similarly, in the Islamic Shari'ah too, certain major sins necessarily entail capital punishment even when the sinner has offered this Taubah توبہ -- for example, life in return for a life in the case of intentional homicide, or death by stoning in the case of adultery established through proper evidence.

Then the Israelites acted upon this divine commandments, they became worthy of receiving the mercy and favour of Allah in the other world.

True piety is to worship God alone, to believe in Him though one has not seen Him, to live in fear of Judgement Day, to subsist on the pure things of the earth, to prevent whomsoever one can from falling into sin. It is those who adopt this way of life who will be successful in the next world.