Mu mateka yose, abantu bamaze igihe bashakisha uburyo bw’imibereho bwizeza uburinganire nyabwo, ariko byinshi byarananiwe kubera ubusumbane bw’amakamba cyangwa ingaruka z’ubuyobozi. Islam yazanye iri hame hashize imyaka irenga 1400, isesa itandukaniro rishingiye ku bwoko, ibara ry’uruhu, cyangwa inkomoko, kandi ishimangira ko isumbwe nyaryo riri mu myitwarire no mu bikorwa byiza. Tekereza ku muryango aho abakire n’abakene bicara hamwe, bagasangira uburenganzira n’inshingano zimwe, nta mashyirahamwe cyangwa ubusumbane bwavukanye… Ibi si inzozi, ahubwo ni ukuri abasilamu babaho mu gihe cy’amasengesho yabo, aho bahagarara ku murongo umwe, nta tandukaniro hagati yabo. Ubu buringanire si inyigisho gusa, ahubwo ni ibikorwa bya buri munsi mu buzima bw’umusilamu, bigaragaza ko agaciro k’umuntu katarangwa n’ukuntu yavutse, ahubwo n’imyitwarire n’amahame yihitiyemo. Ibi bituma umuryango uba urimo ubutabera kurushaho, kandi buri wese ahabwa amahirwe nyayo yo kwigaragaza no kwerekana ibyo ashoboye.