By carefully comparing accounts, scholars have identified common aspects that were in circulation from the late seventh century, and some rudimentary information are confirmed by non-Islamic sources (e.g., a Syriac https://kiarandwb213410.therainblog.com/30470165/how-much-you-need-to-expect-you-ll-pay-for-a-good-cerita-nabi-muhammad-di-gua-hira