And it does not behoove a believer to kill a believer except by mistake, and whoever kills a believer by mistake, he should free a believing slave, and blood-money should be paid to his people unless they remit it as alms; but if he be from a tribe hostile to you and he is a believer, the freeing of a believing slave (suffices), and if he is from a tribe between whom and you there is a convenant, the blood-money should be paid to his people along with the freeing of a believing slave; but he who cannot find (a slave) should fast for two months successively: a penance from Allah, and Allah is Knowing, Wise.

Then when they despaired of him, they retired, conferring privately together. The eldest of them said: Do you not know that your father took from you a covenant in Allah's name, and how you fell short of your duty with respect to Yusuf before? Therefore I will by no means depart from this land until my father permits me or Allah decides for me, and He is the best of the judges: