Oshuro (10-umi muharram), yake az marosimhoi motamii raviya shia, ki ba khotiri dar Karbalo 10-umi muharrami soli 61 hazora (10 oktyabr 680 milod) kushta shudani pisari Ali imom Husayn qayd karda meshavad. Oshuro asosan ikhtilofoti manfiathoi guruhhoi gunoguni sinfi hukmroni on zamonro nishon medihad. Shiaho har sol ba yodi in fojia azodori mekunand. Onho ruzhoi avvali Oshuro, alalkhusus, 10-umi muharram, jamomadhoi kaloni motam barpo menamudand.
Az navhahoi hazini marsiyakhonho mardum ba hayajon omada, guruhi mutaassibon «shoh Husayn, voh Husayn» guyon sinazani menamudand, tan va sari khudro bo zanjiru shamsher zakhmdoru majruh karda figon mebardoshtand. Baroi hoziron taomhoi makhsus (oshuri) tayyor karda meshud. Ruhoniyon va davlatdoron in marosimro odatan baron gumroh namudani mardum va avj girondani taassubi diniyu milli, dar zamonhoi okhir boshad, baroi muboriza bar ziddi harakati revolyutsioni istifoda menamudand. Shaklhoi dahshatovari Oshuro dar respublikami Sharqi Soveti kayho bargam khurdaast. Dar Sharqi khoriji boshad, zaminahoi muhimmi Oshuro va taassubi dini archand ki mahdudtar shudaast, hanuz boqist.