(2) CHAPTER. The Statement of Allah: “And those who invoke not any other ilah (god) along with Allah, nor kill such person...” (V.25:68)
Narrated `Abdullah: I or somebody, asked Allah's Messenger Which is the biggest sin in the Sight of Allah? He said, That you set up a rival (in worship) to Allah though He Alone created you. I asked, What is next? He said, Then, that you kill your son, being afraid that he may share your meals with you. I asked, What is next? He said, That you commit illegal sexual intercourse with the wife of your neighbor. Then the following Verse was revealed to confirm the statement of Allah's Messenger : Those who invoke not with Allah, any other god, nor kill life as Allah has forbidden except for just cause, nor commit illegal sexual intercourse. (25.68)
Narrated Al-Qasim bin Abi Bazza: That he asked Sa`id bin Jubair, Is there any repentance of the one who has murdered a believer intentionally? Then I recited to him:-- Nor kill such life as Allah has forbidden except for a just cause. Sa`id said, I recited this very Verse before Ibn `Abbas as you have recited it before me. Ibn `Abbas said, 'This Verse was revealed in Mecca and it has been abrogated by a Verse in Surat-An-Nisa which was later revealed in Medina.
Narrated Sa`id bin Jubair: The people of Kufa differed as regards the killing of a believer so I entered upon Ibn `Abbas (and asked him) about that. Ibn `Abbas said, The Verse (in Surat-An-Nisa', 4:93) was the last thing revealed in this respect and nothing cancelled its validity.
Narrated Sa`id bin Jubair: I asked Ibn `Abbas about Allah's saying:-- '.. this reward is Hell Fire.' (4.93) He said, No repentance is accepted from him (i.e. the murderer of a believer). I asked him regarding the saying of Allah: 'Those who invoke not with Allah any other god.' ...(25.68) He said, This Verse was revealed concerning the pagans of the pre-lslamic period.