For children, - Islam and friendship: Islamic Sayings on Friendship or Friendship Sayings(Friendship Stories)google.com/+NajimudeenM

Prophet Mohammad (pbuh) stated, "The believer is like a mirror to
other believers (in truthfulness)." Like a mirror, your friend gives
you an honest image. He forgives your mistakes, but does not hide or
exaggerate your strengths and weaknesses.
Once the Prophet Mohammad (pbuh) was asked, "What person can be the
best friend?" "He who helps you remember Allah (SWT), and reminds you
when you forget Him," the Prophet Mohammad (pbuh), counseled.
Prophet Mohammad (pbuh) was further asked, "Who is the best among
people?" Prophet Mohammad (pbuh) replied, "He who, when you look at
him, you remember Allah (SWT)". Such a friend reflects qualities of
love, mercy, honesty, service, patience, optimism, professionalism,
and the entire lifestyle taught by Islam.
Imam Ali (as)Says: "The poor is one who does not have any friend."
Imam Ali (as) Says: "Live amongst people in such a manner that if you
die they weep over you and if you are alive they crave for your
company (friendship)."
Imam Ali (as) Says: "Friendship transfers a stranger in to a relative."
Imam Ali (as) Says: "Do not choose as your friend the enemy of your friend."
Imam Ali (as) Says: "Two true friends are a single soul in different bodies."
Imam Ali (as) Says: "He who discards a friend for slight offence risks
loneliness."
Imam Ali (as) Says: "In time of distress a man can distinguished
between his friend and enemy."
Imam Jafar Sadiq (as) Says: "Be careful to have truthful friends and
try to obtain them, for they are your support when you are in welfare,
and your advocator when you have misfortune."
Imam Ali (as) Says: "Be not friend with a fool, for he will harm you
while meaning to do good to you."
Imam Ali (as) Says: "It is better to listen to a wise enemy than to
seek counsel from a foolish friend."
Imam Ali (as) Says: "Keep away from friendship of liar surely he will
show you as near what is far from you and will show as far what is
near you."
Imam Ali (as) Says: "O' Kumayl! Say what is just in any condition. Be
friends with the righteous and avoid the evil doers, stay away from
the hypocrites and do not accompany the treacherous."
Imam Sajjad (as) Says: "Beware of the companionship of the sinful, and
helping of the unjust."
Imam Ali (as) Says: "If a friend envies you, then he is not a true friend."
Imam Ali (as) Says: "Verily, there are three (types of) friends for a Muslim,
*.The friend who says: I am with you whether you are alive or dead',
and this is his deed.
*.The friend who says: I am with you unto the threshold of your grave
and then I will leave you', and this is his children.
*.The friend who says: I will be with you until when you die', and
this is his wealth which will belong to the inheritors when he dies."
Imam Ali (as) Says: "He who is deserted by friends and relatives will
often find help and sympathy from strangers."
Imam Hassan (as) Says: "Befriend people in the same manner you would
like them to befriend you."
Imam Jafar Sadiq (as) Says: "Be the friend of him who may grace you,
not of one whom you are better than." (Viz. make friends with ones who
are higher than you so that you progress.)
Imam Jafar Sadiq (as) Says: "My most beloved brother is he who (makes
me aware of) my faults."
Imam Hassan Askari (as) Says: "Those who advise their friend secretly
are respecting them, and those who advise them openly are humiliating
them."
Imam Jafar Sadiq (as) has narrated from his father Imam Muhammad Baqir
(as) who said his father Imam Sajjad (as) stated: "O' my son! Beware
of five (groups) and do not seek companionship (friendship) with them,
do not speak with them, and do not make friends with them on (the)
way."
Then, Imam Muhammad Baqir (as) asked his father who they were and
might he introduces them to him. Imam Sajjad (as) responded:
*."Beware of and do not associate with the one who tells lies. He is
as a mirage which makes near for you what is far, and makes far to you
what is near."
*."Beware of and do not associate with an immoral person, because he
will sell you at the price of a morsel or less than that."
*."Beware of and do not associate with a miser because he will deprive
you of his wealth when you are seriously in need of it."
*."Beware of and do not associate with a fool, because he wants to be
of avail to you but he harms you."
*."Beware of and do not associate with the one who disregards his
kinfolks, because I found him (such a person) cursed in the Book
Allah, Almighty and Glorious, in three occurrences." They are: (Sura
Al-Baqarah, 2:27; Sura Ar-Rad, 13:25; and Sura Muhammad, 47:22).