Al-Maaida • BN-TAFSEER-IBN-E-KASEER
﴿ فَطَوَّعَتْ لَهُۥ نَفْسُهُۥ قَتْلَ أَخِيهِ فَقَتَلَهُۥ فَأَصْبَحَ مِنَ ٱلْخَٰسِرِينَ ﴾
“But the other's passion drove him to slaying his brother; and he slew him: and thus he became one of the lost.”
Please check ayah 5:31 for complete tafsir.