﴿ ٱقْتُلُوا۟ يُوسُفَ أَوِ ٱطْرَحُوهُ أَرْضًۭا يَخْلُ لَكُمْ وَجْهُ أَبِيكُمْ وَتَكُونُوا۟ مِنۢ بَعْدِهِۦ قَوْمًۭا صَٰلِحِينَ ﴾

“[Said one of them:] "Slay Joseph, or else drive him away to some [faraway] land, so that your father's regard may be for you alone: and after this is done, you will be [free to repent and to live once again as] righteous people!"”

Please check ayah 12:10 for complete tafsir.