Importance of friend in ISLAM:

Friend in Islam is so important aspect of life that our HOLY PROPHET HAZRAT MUHAMMAD SAWW with great emphasis:

1-Narrated AbuHurairah Radi Allahu anhu : The Prophet SallallahuAlalhi wasallam said: A man follows the religion of his friend; so each one should consider whom he makes his friend.

Sunan Abu Dawud, Book 41, 4815-Hasan

2- Narrated Abdullah Radi Allahu Anhu : The Prophet Sal-Allahu Alaihi Wasallam said, "Everyone will be with those whom he loves."

Sahih Bukhari, Vol 8, Book 73, No. 189

SYMBIOSIS EFFECT IN FRIENDSHIP:
In biology, we studied about a concept of “symbiosis” which states that two organisms lives together in different ways ;
1-Parasites:
Bad friends are same like parasites e.g mosquito which sucks blood of its host and in return transfer the virus into its host same like that bad friends just sucks your important time and your good personality and in return harms you in form of virus of bad habbits .
2-MUTUALISM:
IN Mutualism, if you have a good friend he will be definitely just like in mutualism two organisms live together by cooperating with each other and benefiting each other. Same like that a good friend will definitely benefits you by transferring good habbits into you and