Hadith root of why there is no single "fiqh" system, but rather a collection of parallel systems within Islam. Much of early Islamic history available today is also based on the hadith, although it has been challenged for its lack of basis in primary source material and the internal contradictions of the secondary material available. Hadith may be "hadith qudsi" (sacred hadith) — which some Muslims regard as the words of God (Arabic: Allah) — or "hadith sharif" (noble hadith), which are Muhammad's own utterances. According to as-Sayyid ash-Sharif al-Jurjani, the hadith qudsi differ from the Quran in that the former
Hadith of the Twelve Successors versions of the Genesis creation narrative found in both the Tanakh and The Bible. The earliest know example is found in the Dead Sea Scrolls, Est. 408 BCE to 318 CE. Fihr, which is the founder of Quraish tribe, is a descendant of Prophet Ishmael. Fihr (Quraish) bin Malik bin Nadhr bin Kinanah bin Khuzayma bin Mudrikah bin Ilyas bin Mudhar bin Nizar bin Ma'ad bin Adnan bin Udad bin al-Muqawwam bin Nahur bin Tayrah bin Ya'rub bin Yasyjub bin Nabit bin Ishmael bin Abraham. Hadith of the Twelve Successors The hadith of the twelve successors, or twelve caliphs ()