explaining the verse "But the evil ones ever inspire their friend to contend with you" They used to say: Do not eat which Allah killed, but eat which you slaughtered. So Allah revealed the verse: "Eat not of (meats) on which Allah's name hath not been pronounced"...to the end of the verse.  

عَنِ ابْنِ عَبَّاسٍ فِي قَوْلِهِ { وَإِنَّ الشَّيَاطِينَ لَيُوحُونَ إِلَى أَوْلِيَائِهِمْ } يَقُولُونَ مَا ذَبَحَ اللَّهُ فَلاَ تَأْكُلُوا وَمَا ذَبَحْتُمْ أَنْتُمْ فَكُلُوا فَأَنْزَلَ اللَّهُ ﷻ { وَلاَ تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ }  

"Some people came to the Prophet ﷺ and they said: 'O Messenger of Allah! Why is it that we can eat what we kill but we can not eat what Allah has killed?' So Allah revealed: So eat of that on which Allah's Name has been mentioned if you are indeed believers in His Ayat..." up to His saying: ...And if you obey them, then you would indeed be idolaters (6:121)."  

أَتَى أُنَاسٌ النَّبِيَّ ﷺ فَقَالُوا يَا رَسُولَ اللَّهِ أَنَأْكُلُ مَا نَقْتُلُ وَلاَ نَأْكُلُ مَا يَقْتُلُ اللَّهُ فَأَنْزَلَ اللَّهُ ( فَكُلُوا مِمَّا ذُكِرَ اسْمُ اللَّهِ عَلَيْهِ إِنْ كُنْتُمْ بِآيَاتِهِ مُؤْمِنِينَ ) إِلَى قَوْلِهِ (وَإِنْ أَطَعْتُمُوهُمْ إِنَّكُمْ لَمُشْرِكُونَ )  

“And certainly, the Shayatin (devils) do inspire their friends (from mankind).” [6:121] He said: “They used to say: ‘Whatever the Name of Allah has been mentioned over, do not eat it, and whatever the Name of Allah has not been mentioned over, eat it.’ Then Allah said: “Eat not of that over which Allah’s Name has not been pronounced.’” [6:121] (Using translation from Ibn Mājah 3173)   

«يَقُولُونَ مَا ذُبِحَ فَذُكِرَ اسْمُ اللَّهِ عَلَيْهِ فَلَا تَأْكُلُوهُ وَمَا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ فَكُلُوهُ» فَقَالَ اللَّهُ ﷻ {وَلَا تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللَّهِ عَلَيْهِ} [الأنعام 121]  

explaining the verse "But the evil ones ever inspire their friend to contend with you" They used to say: Do not eat which Allah killed, but eat which you slaughtered. So Allah revealed the verse: "Eat not of (meats) on which Allah's name hath not been pronounced"...to the end of the verse. (Using translation from Abū Dāʾūd 2818)   

عَبَّاسٍ ؓ فِي قَوْلِهِ ﷻ {وَإِنَّ الشَّيَاطِينَ لَيُوحُونَ إِلَى أَوْلِيَائِهِمْ لِيُجَادِلُوكُمْ} [الأنعام 121] قَالُوا يَقُولُونَ مَا ذَبَحَ اللهُ فَلَا تَأْكُلُوهُ وَمَا ذَبَحْتُمْ أَنْتُمْ فَكُلُوهُ فَأَنْزَلَ اللهُ ﷻ {وَلَا تَأْكُلُوا مِمَّا لَمْ يُذْكَرِ اسْمُ اللهِ عَلَيْهِ} [الأنعام 121]