also known as "Submitters". Khalifites accept only the Qur'an as authoritive for their life and reject the hadiths as man-made inventions. They also hold that the two verses brought by Khuzaima, namely Surah 9:128-129, are false and are not part of the Qur'an (For hadiths on the collection of these two verses, see The Collection of the Qur'an - from the hadiths, Section 2.7). Most Muslims hold this group to be heretical for rejecting the hadith and the two verses.
Their approach can be compared to Evangelical Christians stressing sola scriptura, accepting the Bible as the primary authority for the foundation of the Christain faith and treating tradition as secondary and subservient to the first. However, the Khalifites' position is harder because much of Islamic rituals and practices are explained and expanded in the hadiths and are only generally mentioned in the Qur'an. This places them in a difficult position to explain how to perform rituals like ablutions and salat.
Khalifites are also known sometimes as "Number 19 Group", for their claim of mathematical miracles of the Qur'an. For claims and some responses, see some links and the section Numerical Miracles in the Qur'an?