“…and be not amongst those who join gods with Allah, those who split up their Religion, and become shias (sects) - each party rejoicing in that which is with itself.” (Quran, 30:31-32)
Ali (رضّى الله عنه) said:
Be With The Majority of Muslims
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“With regard to me, two categories of people will be ruined, namely he who loves me too much and the love takes him away from rightfulness, and he who hates me too much and the hatred takes him away from rightfulness. The best man with regard to me is he who is on the middle course. So be with him and be with the great majority of Muslims because Allah’s hand of protection is on keeping unity. You should beware of division because the one isolated from the group is a prey to Satan just as the one isolated from the flock of sheep is a prey to the wolf. Beware! Whoever calls to this course [of sectarianism], kill him, even though he may be under this headband of mine.”
Sermon:126, Nahjul-Blgha]
The Best People:
Narrated Muhammad bin Al Hanafiya: I asked my father ('Ali bin Abi Talib),
"Who are the best people after Allah's Apostle?" He said, "Abu Bakr." I asked, "Who then?" He said, "Then 'Umar. " I was afraid he would say "Uthman," so I said, "Then you?" He said, "I am only an ordinary person." [Sahih Al Bukhari Hadith #5:20]
Guidance from the Holy Qur'an:Preaching, The greatness of the Holy Qur'an, About the believers and their good deeds; and the hypocrites and their bad deeds. Following the sunnah and refraining from innovation and Guidance from the Holy Qur'an. Categories of oppression
"And know that this Qur'an is an adviser who never deceives, a leader who never misleads and a narrator who never speaks a lie. No one will sit beside this Qur'an but that when he rises he will achieve one addition or one diminution - addition in his guidance or elimination in his (spiritual) blindness. You should also know that no one will need anything after (guidance from) the Qur'an and no one will be free from want before (guidance from) the Qur'an. Therefore, seek cure from it for your ailments and seek its assistance in your distresses. It contains a cure for the biggest diseases, namely unbelief, hypocrisy, revolt and misguidance. Pray to Allah through it and turn to Allah with its love. Do not ask the people through it. There is nothing like it through which the people should turn to Allah, the Sublime.
Know that it [Qur'an] is an interceder and its intercession will be accepted. It is a speaker who is testified. For whoever the Qur'an intercedes on the Day of Judgement, its intercession for him would be accepted. He about whom the Qur'an speaks ill on the Day of Judgement shall testify to it. On the Day of Judgement an announcer will announce, "Beware. every sower of a crop is in distress except the sowers of the Qur'an." Therefore, you should be among the sowers of the Qur'an and its followers. Make it your guide towards Allah. Seek its advice for yourselves, do not trust your views against it. and regard your desires in the matter of the Qur'an as deceitful." [Ali (r.a) Nahjul Balagha, Sermon#175]
The Characteristics of an unfaithful believer:
While the other (kind of) man is he who calls himself learned but he is not so. He has gleaned ignorance from the ignorant and misguidance from the misguided. He has set for the people a trap (made) of the ropes of deceit and untrue speech. He takes the Qur'an according to his own views and right after his passions. He makes people feel safe from big sins and takes light the serious crimes. He says that he is waiting for (clarification of) doubts but he remains plunged therein, and that he keeps aloof from innovations but actually he is immersed in them. His shape is that of a man, but his heart is that of a beast. He does not know the door of guidance to follow nor the door of misguidance to keep aloof therefrom. These are living dead bodies.[Nahjulblagha, Sermon#86]
Only Allah has Knowledge of Hidden Al Ghaib:
"One of his companions said to him: O' Amir al-mu'minin, you have been given knowledge of hidden things. Whereupon Amir al-mu'minin laughed and said to the man who belonged to the tribe of Banu Kalb: O' brother of Kalb! This is not knowledge of hidden things (`ilmu'l-ghayb), (3) these matters have been acquired from him (namely in Prophet) who knew them. As regard knowledge of hidden things, that means knowledge of the Day of Judgement, and the things covered by Allah in the verse.
Verily, Allah is He with Whom is the knowledge of the Hour... (Qur'an, 31:34)
Therefore, Allah alone knows what is there in the wombs, whether male or female, ugly or handsome, generous or miserly, mischievous or pious, and who will be the fuel for Hell and who will be in the company of the Prophets in Paradise. This is the knowledge of the hidden things which is not known to anyone save Allah. All else is that whose knowledge Allah passed on to His Prophet and he passed it on to me, and prayed for me that my bosom may retain it and my ribs may hold it."