It means that the devil calls you to disobedience and transgression, and urges you to leave the teachings of Islaam completely, as the Devil is the biggest enemy of Islaam. So it is essential for a Muslim to adopt Islaam completely hold fast the rope of Allaah, avoid sectarianism and formation of groups. You should follow the commandments of Allaah in your prayers, in matters of marriage, divorce, and maintenance of dependants (e.g. sucking the child) dealing with friends and enemies, in peace and war - in short, Allaah's commandments should be adopted in every walk of life. Avoid making friendship with somebody simply because he happens to have supported you on some occasion, and similarly the basis of your enmity should not be the fact that a person had opposed you on some matter. This is against justice. The Companions (r.a.a.) of the Messenger of Allaah () at times differed among themselves on some points, these difference of opinions could not affect their clear heartedness without affecting the cordiality of their friendship. (They were pleased with Allaah and Allaah was pleased with them). Now it is evident that a Muslim acts according to the Sharee’ah (Allaah's way), deals with every body justly, truth is his guide. Such a person never commits injustice or wrong to his brother; and does not deal unjustly with him because he had differed with him on some points where there was scope for a variety of interpretations and explanations. Similarly it makes no difference if there is possibilty of interpretation in the basic injunctions as it is difficult to achieve unanimity on such matters. Your duty is only to seek the good of the concerned person under all circumstances and treat him with affection and love. The Deen - Islaam - does not teach you to create differences and dissensions amongst yourselves and create enemies without the least justification .(There is no power or authority except that of Allaah).

Islaam is the religion of justice; It is the religion of reign of truth, goodness and equality, except in case of exemptions made by Almighty Allaah. The call of this religion (Deen) is an invitation to all that is good, it invites to the blessings of moral virtues and decency of act and lastly it is a call to justice and fair play. It is a religion calling to shun every kind of moral degradation and immorality as Allaah, the Exalted, enjoins in the Qur’aan.

“Verily ! Allaah enjoins justice and kindness, and giving to kinsfolk, and forbids lewdness and abomination and wickedness. He exhorts you in order that you may take heed.” (16 : 90)

And Allaah, the Great, says: