´It was narrated that Sa'eed bin Jabair said:` "The people of Al-Kufah differed concerning this verse: 'And whoever kills a believer intentionally. So I went to Ibn 'Abbas and asked him, and he said: 'It was revealed among the last of what was revealed, and nothing of it was abrogated after that.
Explanation & Benefits
Hafiz Muhammad Ameen
(1) "There has been a difference of opinion" as to whether the repentance (tawbah) of a deliberate murderer (qatil ‘amd) can be accepted or not.
(2) "He departed." Because he used to reside in Makkah al-Mukarramah.
(3) "It was not abrogated." Because this verse is Madinan, and the verse regarding repentance is Makkan; furthermore, in it, the mention is of the polytheists (mushrikin), not of the Muslims.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 4868