48. God's refusal to accept the sacrifice of one of the two brothers was not due to any wrong the other brother might have committed but to his own lack of piety. Hence, rather than attempt to kill his brother he should be concerned with cultivating piety.
49. This does not mean, that his brother assured him that when the latter
stepped forward to kill him he would keep his hands tied and stretch out his
own neck to be cut down rather than defend himself. What this statement amounts
to is an assurance on the part of the first brother that, even though the other
was intent on killing him, he himself had no such intention. In other words,
he assured his brother that even though the latter was busy planning his murder
he would not take the initiative in killing him despite his knowledge of the
latter's intent.
Righteousness does not demand at all that when a man is subjected to wrongful
aggression he should surrender to the aggressor rather than defend himself.
Righteousness, however, demands that a man should not take the initiative and
try to kill someone even though he knows him to be bent on killing him. He should
rather wait for the act of aggression to be initiated by the other person. And
this is exactly what was intended by the statement of the righteous son of Adam.
50. The righteous son of Adam told his brother that rather than both of them becoming sinners by trying to kill each other, he would prefer to see the entire sin fall on the lot of the one who was intent on the murder - the sin of the aggressor's attempt to murder, as well as the sin of any injury that might be inflicted on him in self-defence.
51. In this way God made this errant son of Adam realize his ignorance and folly. Once his attention turned to self-appraisal, his regret was not confined to realizing that in his effort to hide his brother's corpse he proved to be even less efficient than the raven. He also began to feel how foolish he was to have killed his own brother. The later part of the sentence indicates this remorse.
52.The purpose of mentioning this particular incident is to reproach the Jews subtly for the plot they had hatched to assassinate the Prophet (peace be on him) and some of his illustrious Companions see (n. 30) above. The resemblance between the two incidents is evident. God honoured some of the illiterate people of Arabia and disregarded the ancient People of the Book because the former were pious while the latter were not. But rather than reflect upon the causes of their rejection by God, and do something to overcome the failings which had led to that rejection, the Israelites were seized by the same fit of arrogant ignorance and folly which had once seized the criminal son of Adam, and resolved to kill those whose good deeds had been accepted by God. It was obvious that such acts would contribute nothing towards their acceptance by God. They would rather earn them an even greater degree of God's disapproval.