Conversation so far:
What was unusual about Schacht's method?
As a whole, Origins critiques the methods and standards of ḥadīth verification, an early and centrally important stage in the formation of Islamic jurisprudence.
What is one of the sources of Islamic law?
The Quran
What other sources did Joseph Schacht say Islamic law comes from besides the Quran?
the Sunnah (the body of traditional social and legal custom and practice of the Islamic community), Qiyas (the process of deductive analogy ), andIjma (the consensus/agreement of Muslim scholars)

Question: Was he a great influence on other scholars of Islam?
Self-contained rewrite: Was Joseph Schacht a great influence on other scholars of Islam besides Muslims?