In the Islamic plan of actions emphatic orders have been given regarding family relations or kith and kin. We point to a part of the same here:
1. And when We made a covenant with the children of Israel: You shall not serve any but Allah and you shall do good to your parents, and to the near of kin.
2. And those who join that which Allah has bidden to be joined and have awe of their Lord and fear the evil reckoning.
3. And those who break the covenant of Allah after its confirmation and cut asunder that which Allah has ordered to be joined and make mischief in the land; as for those, upon them shall be curse and they shall have the evil issue of the abode.
Traditions
1- Momineen (a.s.) is reported to have said: Join even Amirul with Salaam well-wishing words. Lord Almighty says: and be careful of your duty to Allah, by whom you demand one of another your rights, and to the ties of relationship; surely Allah ever watches over you.
2- Amirul Mo-mineen (a.s.) has also said: Join relations with your kinsfolk even if they cut off relations with you.
3- Imam Baqir (a.s.) has quoted the Holy Prophet (s.a.w.s.) words: Angel Jibraeel has informed me that the fragrance of paradise can be smelled from a distance of a thousand year journey. But it cannot be smelled by the one whom his parents have cursed and disinherited and the one who cuts of relations with relatives and one who commits adultery in old age.
4- Hazrat Reza (a.s.) quotes from his father: Joining of relations with relatives and behaving nicely with neighbours makes one rich.
5- Ishaaq bin Ammaar says: I heard from Imam Sadiq (a.s.) that Maintaining good relations with kin and behaving nicely with others makes accounting in the Hereafter easy and prevents the bad results of sin. so join the relations and behave nicely with your brothers even it is by saying Salaam in a good way and by responding to a salaam greeting.
6- Imam Sadiq is reported to have said: Maintaining good relations makes the accounting on the Day of Judgement easy makes life span longer and protects one from a bad death and a charity given at night cools down eases the Divine anger.
In conclusion we should know that man is not an existence which is isolated and cut off from the rest of the world but his entire being is made up of a number of attachments and connections and concerns. On the one hand he is connected with the Creator of the universe. It is such that if he cuts off that attachment he gets destroyed like an electric bulb which goes off if the current connecting it with the source of power is cut. So, just as, from the viewpoint of creation, he is joined with this great source, it is also necessary for him from the viewpoint of obedience and religious submission, to maintain and continue this relation to the best of his ability. From another direction, he has a connecting relation to the best of his ability. From another direction, he has a connecting relation with the Holy Prophet (s.a.w.s.) and the Imam as his leader and guide, which, if cut off, makes man wander in wrong ways.
From yet another direction, he is also related with the entire human society and especially with those who have more rights on him like his mother and father and relatives and friends and teachers and tutors. From yet another side he has relative with his own self as he is duty bound to preserve and advance himself toward perfection.
Maintaining and preserving all of these relations is, in fact, what is called in the Holy Quran yasiloo na maa a ma rallaahu bihi an yoosal and cutting off of any of these relations is in the Divine Text the cutting of Maa a ma rallaahu an yoosal because the Lord Almighty has commanded the maintenance of all these connections.
There is, it seems, nothing more now here to explain this intention.