Eid is the festival held by Muslims to celebrate the end of Ramadan, the Islamic holy month, where Muslims fast between sunrise and sunset every day.

Ramadan, a lunar month, is either 29 or 30 days, depending upon the cycle of the moon when the festival occurs. 

But how do you wish someone celebrating a 'happy Eid'? 

Read on below as FEMAIL explains what you need to know about Eid and how to support your loved ones who are celebrating.

How do I wish someone happy Eid?

If you want to wish someone you know a happy Eid, you can say: 'Eid mubarak' to them.

When translated into English, it means 'blessed festival' or 'blessed feast'. It is the most common way people express their celebration to family and friends.

Typically, the polite response to 'Eid mubarak' is to say 'Khair Mubarak', which wishes the person good will in response.

Another way of wishing someone a happy Eid is to say: 'Eid sa'id'

And some people say Jazak Allah Khair to celebrate the end of Ramadan. This translates to: 'May Allah reward you with goodness.'

Things you SHOULDN'T say to someone who has finished Ramadan

As well as knowing how to respectfully wish someone a happy Eid, it's also worth knowing the things you should avoid saying.

You must have lost weight!

During Ramadan, Muslims fast from the hours of sunrise to sunset, and eat larger meals in the evening.

They do not eat or drink during the daytime for the 29-30 day period (however long the month of Ramadan is due to last).

However, the purpose of Ramadan isn't to lose weight. It's about honouring the Islamic teaching of equality between rich and poor and it is one of the five pillars of Islam.

Bet you're starving now!

Any hunger or thirst someone feels while practising Ramadan is personal, and it's all part of their own experience with the religious practice.

Additionally, the fast is not about 'starving', as Muslims do eat during Ramadan - just not in daytime hours.

Therefore, it probably isn't particularly helpful, accurate or funny to joke about someone's appetite at the end of the month of Ramadan.

Let's go for a drink to celebrate!

This one should be fairly obvious to most people, but it's not quite appropriate to ask people celebrating Eid to go for a drink.

Practicing Muslims do not drink alcohol, and therefore while they may want to celebrate with you, there are many ways you can invite them to do so that don't involve booze.

In Islam, consumption of alcohol is considered harmful as it is prohibited.

The Quran contains a verse that refers to intoxicants as 'the work of Satan'.