TAVHID (yagonagi, vahdat), talimoti diniest, ki yakkayu yagona budani khudoro dar «lo iloha illalloh» ifoda mekunad. Mafhumi khudo dar davrai politeizm dar bayni arabho malum bud, vale in mafhum khudohoi oomoniero ifoda mekard, ki hanuz yakkavu yagona nabudand. Muhammad goyai vahdati setonai (khudo-padar, khudo-pisar va ruhulquds) masehiyatro, ki mohiyatan manoi shirki dosht, rad namud va elon kard, ki khudo yakkayu yagona ast.
Dar masalai haqqu khalq — chi guna az vahdat ba vujud omadani kaorat — dar Quron yagon aqidai muayyanu murattab sabt nashudast. In masala dar afkori falsafi va irfonii mutafakkironi Sharq mavridi barrasi qaror girift va dar bob aqidahoi gunogun ba miyon omadand. Masalan, Tavhidi tasavvufi az Tavhidi dini farq mekunad. Jullobii Hajviri dar «Kashf-ul-mahjub li arbob-il-qulub» qavd kardaast, ki «haqiqati tavhid hukm kardan ba yakvagii khudost. In Tavhid se khel ast. Navi yakumi on Tavhidi haq ast, ki ahadiyati khudovandro ifoda mekunad. Navi duyumash Tavhidi haqqu khalq ast, ki vahdatro inikos menamoyad va navi seyum Tavhidi khalqu haq ast, ki goyai vakhdatu kasratro dar yagonagi tajassum mekunad.
Dar afkori irfoni, dar zinai fano masalai vazdat yo khud hulul bo khudo ba miyon guzoshta shud. Dar zinai baqo kasrati hamin vahdat dar ashyoi olami beruna zohir meshavad.
Tavhidi diniyu irfoni asosi ilmi vadoshta, faqat aqidai monoteistiro talqiya mekunad. M. Hazratqulov.