While hadith tell of rules of naskh being passed down directly from Muhammad's closest Companions (sahabah) and future Muslim leaders — others believe it more likely ideas about naskh originated later. Ahman Hasan speculates that the idea of the abrogation of certain Qur'anic verses "emerged" early in the history of Islam when commentators and the jurisconsults seeking to reconcile the "apparently contradictory verses", looked to the Quranic verses such as Q.16:110 — "... We put a revelation in place of (another) revelation ..." — to develop a theory that some later verses replaced the commands of earlier ones.