Eid Mubarak (Arabic: عيد مبارك, Persian/Urdu: عید مُبارک, Malayalam: ഈദ് മുബാറക്, Bengali: ঈদ মুবারক) is a fixed Muslim greeting kept back for use on the festivals of Eid ul-Adha and Eid ul-Fitr. The phrase translates into English as "sacred festival", and can be paraphrased as "may you enjoy a sacred festival"
Muslims wish each other Eid Mubarak after performing the Eid prayer. The festival continues awaiting the end of the day for Eid ul-Fitr (or al-Fitr) and continues a more three days for Eid ul-Adha (or Al-Adha). However, in the social sense people usually celebrate Eid ul-Fitr at the same time as Eid ul-Adha, visiting family and exchanging greetings such as "Eid Mubarak". This exchange of greetings is a cultural tradition and not part of any religious obligation
Throughout the Muslim world there are plentiful other good wishes for Eid ul-Adha and Eid ul-Fitr. The Companions of the Islamic prophet Muhammad used to say to each other when they met on Eid ul-fitr