A WORTHY TO WATCH Lecture FOR ALL MUSLIMS WHO ARE MISGUIDED BY TAKFIRI ULAMA BY USING WEAK AND FALSE AHADEES FOR THEIR OWN INTERESTS.
All Muslim should love and respect each other's opinion and should reply with knowledge and wisdom taken from Quran & established Sunnah.
Nu'man b. Bashir reported Allah's Messenger (may peace be upon him) as saying: The similitude of believers in regard to mutual love, affection, fellow-feeling is that of one body; when any limb of it aches, the whole body aches, because of sleeplessness and fever.
Nu'man b. Bashir reported that Muslims are like one body of a person; if the eye is sore, the whole body aches, and if the head aches, the whole body aches.
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: When two persons indulge in hurling (abuses) upon one another, it would be the first one who would be the sinner so long as the oppressed does not transgress the limits.
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Charity does not in any way decrease the wealth and the servant who forgives Allah adds to his respect, and the one who shows humility Allah elevates him in the estimation (of the people).
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Do you know what is backbiting? They (the Companions) said: Allah and His Messenger know best. Thereupon he (the Holy Prophet) said: Backbiting implies your talking about your brother in a manner which he does not like. It was said to him: What is your opinion about this that if I actually find (that failing) in my brother which I made a mention of? He said: If (that failing) is actually found (in him) what you assert, you in fact backbited him, and if that is not in him it is a slander.
Abu Huraira reported Allah's Apostle (may peace be upon him) as saying: The servant (whose fault) Allah conceals in this world, Allah would also conceal (his faults) on the Day of Resurrection.
Reference :
The Book of Virtue, Good Manners and Joining of the Ties of Relationship (Kitab Al-Birr was-Salat-I-wal-Adab)' of Sahih Muslim.
And many many more Hadith one can find on the importance of Muslim Unity if some one looking for it. May Allah guide us Allah and live like a one unit of body as a Muslim.