Salam alaikum wa rahmatullah.
From the introduction:
Praise is to Allah, who promised his faithful slaves victory and support by saying, “and helping the believers is ever incumbent on Us”.
I bear witness that there is none to worshipped save Allah, One, with no partners. He sent His Messenger Muhammad (sallalahu alayhi wa ala alihi sallam) with guidance and the religion of Truth to cause it to prevail over all religions even though the unbelievers may detest it. And I bear witness that our Master, Prophet, and Beloved Muhammad (sallalahu alayhi wa ala alihi sallam) is the Messenger of Allah, He is the Imam of the Pious, the Master of the Messengers and the Mercy to the worlds. And after this.
The main problem and difference between two main streams in Islam, is a question of superiority of companions. Which one is best!? That’s was a main question between tashayu of first generations and ahle-sunnah.
Praise to Allah that we have very heavy proof that Abu Bakr and Umar, were superior to Ali (may Allah be pleased with them). We have words of saydina Ali.
 Ar-Room 47 verse.