A couple minutes ago, I just watched a video of Dr. Zakir Naik addressing the Shi'a and the Sunni division. And he said that in Islam there are simply no division; and used the verse from Surah Al-An'am Ch: 6 Verse: 159 and said "The people who created a division in Islam, has nothing to do with Islam," or something along those lines. Now what I'm wondering is, what about all the different Madhabs? Are they considered divisions? Are Imam Shafi'i or Imam Hanbali somehow responsible for the so-called divisions?