Al-Anfal (The Spoils of War) - Chapter 8: Verse 172

"Those who believed, who emigrated and struggled with their goods and themselves in the way of God, and those who gave them refuge and succor, they are allied with each other. And as for those who believed but who did not emigrate with you, you will not be bound to them as they did not emigrate. If they ask for your help in the name of religion, you must help them, except against people with whom you have concluded a treaty. God sees perfectly what you do."

It is not required of the Muslim to inquire about what he has not witnessed, i.e., How was the animal killed? Did the manner of Slaughter meet the Islamic conditions? Was the name of Allah mentioned while slaughtering or not? If the animal was slaughtered by a Muslim, even if he is ignorant or sinful, or by someone from among the People of the Book, eating it is halal for us.

Humanism and humanity are both derived from the word man and have a higher moral connotation. This double meaning of ideas connected to man’s name is a result of man's double nature, one of them originating from the earth and the other from heaven. The materialists always directed our attention to the external aspects of things. "The hand is not only an organ of work," writes Engels, "but also a product of it. Only through work ... the human hand attained that high degree of perfection in which it could produce Raffaello's paintings, Thorvaldsen's statues and Paganini's music."

In Sahih Muslim, there is a hadith on the authority of Abu Huraira that describes the great reward for those people who complete and "perfect" their Islam. Abu Huraira narrated that the Prophet (peace be upon him) said,

The Prophet (peace be upon him) said, “Whoever believes in Allah and the Last Day should not harm his neighbour.” [Bukhari, Muslim]

In another hadith the Prophet said, “By Allah, he is not a believer. By Allah, he is not a believer. By Allah, he is not a believer.” It was said to him, “Who is that, O Messenger of Allah (peace be upon him)?” He said, “The one from whose affairs his neighbour is not safe.” [Bukhari, Muslim]