Sahih Bukhari | Volume 6 | Hadith Number 287

Narrated by Said 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-Islamic period."