اقرأ الرسالة مجددا.

A good pronunciation is:

iqraʾ ar-risālata mujaddadan

A few notes:

• اقرأ = iqraʾ
• الرسالة = ar-risālah / ar-risālata
• مجددا = mujaddadan

In very careful MSA with case endings, الرسالة is ar-risālata because it is the direct object. In less formal pause-style pronunciation, learners often hear ar-risālah.

اقرأ is the imperative form, meaning Read!

More specifically, it is:

• 2nd person
• singular
• masculine

So it is a command addressed to one male.

Because Arabic verbs often include the subject inside the verb itself.

In an imperative like اقرأ, the meaning you read! / read! is already built in, so Arabic usually does not need to add أنت.

If you did add أنت, it would usually sound unnecessary unless you wanted emphasis.

This is a very common question, because Arabic usually leaves out short vowels in normal writing.

Here, context tells you it is the imperative iqraʾ:

• It comes at the start of a command.
• The whole sentence is an instruction.
• The verb قرأ has the imperative form اقرأ.

By contrast, أقرأ with a different context and vocalization could relate to I read / I recite, but that is not what is happening here.

Because verb-first order is very common in Arabic, especially in commands.

So:

• اقرأ الرسالة = Read the letter
• Verb first is natural and standard.

English also starts commands with the verb, so in this sentence the word order actually feels fairly familiar.

الرسالة is the direct object of the verb.

It is the thing being read.

Also, الـ makes it definite, so it means:

• the letter
• or the message, depending on context

So grammatically:

• اقرأ = verb
• الرسالة = direct object

Because ر is a sun letter.

When ال comes before a sun letter, the l sound assimilates to the next consonant. So:

• الرسالة
• written with ال
• pronounced ar-risālah

This is a pronunciation rule only. The spelling stays الرسالة.

It is in the accusative case because it is the direct object.

In fully vocalized MSA, it would be:

الرسالةَ

That final -a sound marks the accusative.

In normal everyday Arabic writing, short vowels are usually omitted, so you simply see الرسالة.

Here مجددا means again, anew, or once again.

It tells you how the action should happen:

• Read the letter again

So it functions like an adverb in English, even though Arabic grammar describes these things a bit differently.

In fully vocalized MSA, it is usually written مجددًا.

That ending shows an indefinite accusative adverbial form. In ordinary unvowelled text, the short vowels and tanwīn are usually left out, so you just see:

مجددا

So both are the same word; one is just more fully marked.

No. A very common alternative is:

مرة أخرى

So you can also say:

اقرأ الرسالة مرة أخرى

That also means Read the letter again.

A rough difference is:

• مجددًا = a bit more formal/bookish
• مرة أخرى = very common and straightforward

Both are correct in MSA.

The imperative changes depending on who is being addressed.

Common forms are:

• to one man: اقرأ الرسالة مجددًا
• to one woman: اقرئي الرسالة مجددًا
• to two people: اقرآ الرسالة مجددًا
• to a group of men or a mixed group: اقرؤوا الرسالة مجددًا
• to a group of women: اقرأن الرسالة مجددًا

So the original sentence is specifically addressed to one male.