Hazrat Sabah bin Thabit narrates that Hazrat Ikrimah said: The repentance of a murderer is accepted.

Hazrat Abu Ishaq narrates that a man came to Hazrat Umar and said: I have committed murder; can my repentance be accepted? He replied: Yes, do not despair, and he recited to him this verse from Surah Ha Meem Mo’min.

Hazrat Taimi narrates that Hazrat Abu Majliz said regarding { فَجَزَاؤُہُ جَہَنَّمُ }: Hell is its punishment, so if He wishes to exceed that punishment, He can do so.

Hazrat Sayyar narrated the aforementioned statement from Hazrat Abu Salih with this chain of transmission.

Hazrat Ziyad bin Abu Maryam says that I asked Hazrat Ibn Ma'qil: Did you hear your father saying that I heard Hazrat Abdullah, and he said that the Holy Prophet, peace and blessings be upon him, said: Repentance is the name of remorse? He replied, Yes.

Hazrat Abdullah bin Ma'qil narrates that his father, Hazrat Ma'qil bin Muqrin Muzani, asked Hazrat Ibn Mas'ud: Did you hear the Holy Prophet (peace and blessings be upon him) say that repentance is the name of remorse? He replied: Yes.

Hazrat Sa’d bin Ubaidah narrates that a man came to Hazrat Ibn Abbas (may Allah be pleased with them) and said: Is the door of repentance open for one who kills a believer? He replied: No, except for Hell. Then when that person left, his companions said to him: You do not give us such a fatwa. You do not give us a fatwa that surely the repentance of one who kills a believer is accepted, so what is the ruling today? He replied: I think this person is angry and intends to kill a believer. The narrator said: So those people went after that man and found him to be just as he had said.

Hazrat Sha'bi narrates that Hazrat Ibn Abbas (may Allah be pleased with them both) looked towards the Ka'bah and said: Your honor and sanctity are very great, and your right is very great, but surely a Muslim surpasses you in honor and sanctity. Allah, the Lord of Honor, has made his wealth unlawful (to take unjustly), and it is forbidden to harm him, and even to think ill of him.

Hazrat Ata narrates that Hazrat Abdullah bin Umar said: To kill a believer is, in the sight of Allah, a greater sin than the destruction of the world.

Hazrat Mujahid says that Hazrat Ibn Abbas (may Allah be pleased with them) said { فَکَأَنَّمَا قَتَلَ النَّاسَ جَمِیعًا } Translation: It is as if he has killed all of humanity. He said: Whoever killed him. { وَمَنْ أَحْیَاہَا فَکَأَنَّمَا أَحْیَا النَّاسَ جَمِیعًا } And whoever kept him alive, it is as if he refrained from killing all of humanity.