Allah's statement:

﴿وَلَكُمْ فِي الْقِصَاصِ حَيَوةٌ﴾

(And there is life for you in Al-Qisas) legislating the Law of equality, i.e., killing the murderer, carries great benefits for you. This way, the sanctity of life will be preserved because the killer will refrain from killing, as he will be certain that if he kills, he would be killed. Hence life will be preserved. In previous Books, there is a statement that killing stops further killing! This meaning came in much clearer and eloquent terms in the Qur'an:

﴿وَلَكُمْ فِي الْقِصَاصِ حَيَوةٌ﴾

(And there is (a saving of) life for you in Al-Qisas (the Law of equality in punishment).)

Abu Al-`Aliyah said, "Allah made the Law of equality a `life'. Hence, how many a man who thought about killing, but this Law prevented him from killing for fear that he will be killed in turn.'' Similar statements were reported from Mujahid, Sa`id bin Jubayr, Abu Malik, Al-Hasan, Qatadah, Ar-Rabi` bin Anas and Muqatil bin Hayyan. Allah's statement:

﴿يأُولِي الأَلْبَـبِ لَعَلَّكُمْ تَتَّقُونَ﴾

(O men of understanding, that you may acquire Taqwa.) means, `O you who have sound minds, comprehension and understanding! Perhaps by this you will be compelled to refrain from transgressing the prohibitions of Allah and what He considers sinful. ' Taqwa (mentioned in the Ayah) is a word that means doing all acts of obedience and refraining from all prohibitions.

﴿كُتِبَ عَلَيْكُمْ إِذَا حَضَرَ أَحَدَكُمُ الْمَوْتُ إِن تَرَكَ خَيْرًا الْوَصِيَّةُ لِلْوَلِدَيْنِ وَالاٌّقْرَبِينَ بِالْمَعْرُوفِ حَقًّا عَلَى الْمُتَّقِينَ ﴾

﴿فَمَن بَدَّلَهُ بَعْدَمَا سَمِعَهُ فَإِنَّمَآ إِثْمُهُ عَلَى الَّذِينَ يُبَدِّلُونَهُ إِنَّ اللَّهَ سَمِيعٌ عَلِيمٌ - فَمَنْ خَافَ مِن مُّوصٍ جَنَفًا أَوْ إِثْمًا فَأَصْلَحَ بَيْنَهُمْ فَلاَ إِثْمَ عَلَيْهِ إِنَّ اللَّهَ غَفُورٌ رَّحِيمٌ ﴾

(180. It is prescribed for you, when death approaches any of you, if he leaves wealth, that he makes a bequest to parents and next of kin, according to reasonable manners. (This is) a duty upon Al-Muttaqin (the pious).) (181. Then whoever changes it after hearing it, the sin shall be on those who make the change. Truly, Allah is All-Hearer, All-Knower.) (182. But he who fears from a testator some unjust act or wrongdoing, and thereupon he makes peace between the parties concerned, there shall be no sin on him. Certainly, Allah is Oft-Forgiving, Most Merciful.)