64TheIslamicateContextall. Islam
requiresagovernment
run
byMuslimsbecausethefulfillmentofaproperreligious
life
dependsonthisenforce-ment;noother
agencycanmaintaintheSharfCa,representtheumma,or
wagejih(d.Thus,while.Jews
andChristiansinthe
practiceoftheirreli-gionscanignoretheauthoritiesabovethem,Muslimscannot.Jews
formed closed
minoritycommunitiesfor thousands ofyearswithout
attainingsovereigncontrol;onthe
contrary,theChurchhasbeen
so
powerfulthatithasonoccasionthreatenedtotakeoverthestate.More
dependenton
government,Islamisvulnerabletoitsvicissitudes;afailure
byMuslimstoattainthepublicideals
requiredby
their
religionwouldhaveseriouscon-sequencesfortheirattitudestoward
governmentandinvolve-mentwithit.Thecontrastbetweenidealsandtheactualitiesof
publiclifehasthusbeen
especiallysignificantforMuslims.Umma,Caliphate,
lihd:TheIdealThe
politicaland
militaryidealsofIslamarewe]]known:
theyarethe
subjectofintroductorycoursesinIslamandoffull-
lengthstudies,22so
theyneednotdetainus
long.ThreeArabicwords
maybe used to sumup
theseideals:um,caliphate(=khilgfa),and
jihd,referringtothecommunity
ofIslam,itspoliticalleadership,anditswarfare.
TheummaofIslamemerged
inMedinaunderMu
.hammad.Itdeveloped
in
oppositionto the communities ofthe othermonotheistic
religionsandto theArabian
tribes.The IslamicummaaimedtomaketheMuslimsintoboth
a
religiouscommu-nitylikethoseoftheJews
andChristiansandintoa
supratribalunitinwhichIslam
replacedkinship-basedaffiliations.Thecon-vertto Islam
put prioraffiliationsasidewhenhe
joinedtheumma. As Islam became universalistic,
when non-Arabians
joined,
theummabecameuniversalistictoo.Fromhumblebe-
22.Someofthesestudiesinclude:L.Gardet,LaCitmusulmane:viesocialeetpolitique(Paris,1954);Khadduri;E.I.J.Rosenthal,Political
Thoughti.nMedievalIslam:AnIntroductoryOutline(Cambridge,England,1958);
Tyan.Thefollowingdiscussion
ignoresfinancialand
judicialideals,althoughthesame
argumentappliesequallytothem
(e.g.zakgh,Haarmann,
pp.10-14).