Al-An'am 6:121 ولا تاكلوا مما لم يذكر اسم الله عليه وانه لفسق وان الشياطين ليوحون الى اوليايهم ليجادلوكم وان اطعتموهم انكم لمشركون ١٢١
وَلَا
تَأۡكُلُواْ
مِمَّا
لَمۡ
يُذۡكَرِ
ٱسۡمُ
ٱللَّهِ
عَلَيۡهِ
وَإِنَّهُۥ
لَفِسۡقٞۗ
وَإِنَّ
ٱلشَّيَٰطِينَ
لَيُوحُونَ
إِلَىٰٓ
أَوۡلِيَآئِهِمۡ
لِيُجَٰدِلُوكُمۡۖ
وَإِنۡ
أَطَعۡتُمُوهُمۡ
إِنَّكُمۡ
لَمُشۡرِكُونَ
١٢١
Do not eat of (the animal) over which the name of Allah has not been pronounced (at the time of its slaughtering), for that is a transgression. And behold, the evil ones do inspire doubts and objections into the hearts of their friends so that they dispute with you;1 but if you obey them, you will surely yourselves turn into those who associate others with Allah in His divinity.2
Read Tafsir
Ibn Kathir (Abridged)
The Prohibition of what was Slaughtered in other than Allah's Name
This Ayah is used to prove that slaughtered animals are not lawful when Allah's Name is not mentioned over them -- even if slaughtered by a Muslim. The Ayah about hunting game,
فَكُلُواْ مِمَّآ أَمْسَكْنَ عَلَيْكُمْ وَاذْكُرُواْ اسْمَ
…The Prohibition of what was Slaughtered in other than Allah's Name
This Ayah is used to prove that slaughtered animals are not lawful when Allah's Name
…