Does premeditated intent to kill, followed by repentance, differ from unintentional killing in the acceptance of repentance? Is there a difference of opinion among scholars regarding the acceptance of repentance from one who intended to commit a sin and then repented? Are the Islamic legislative sources in agreement on its acceptance?

We do not know of any scholar who differentiated between the repentance of one who kills while intending to repent—which would then not be accepted—and the repentance of one who kills without intending to repent—which would then be accepted. The Quran indicates the opposite, as in the Almighty’s saying: "Kill Joseph or cast him to some [distant] land; your father's attention will be free for you, and you will be, after that, a righteous people." (Yusuf: 9). This verse proves the acceptance of the repentance of a killer who killed while intending to repent for the act of killing.