بهاي اللوحة الاصلية في تفصيل صغير.

Yes. In Levantine, بـ is a very common preposition, and it often covers meanings that English would express with in, at, or with, depending on context.

So بهاي اللوحة means in this painting.

A very common alternative is بهاللوحة, which also means in this painting and may sound even more natural in everyday speech.

هاي is the feminine form of this in Levantine Arabic.

Because لوحة is a feminine noun, the speaker uses هاي:

• هاي اللوحة = this painting

For a masculine noun, you would usually hear something like هاد or another regional variant such as هيدا.

Because Arabic adjectives normally match the noun in definiteness as well as gender and number.

So:

• اللوحة الأصلية = the original painting
• لوحة أصلية = an original painting

Since the noun is definite, the adjective must also be definite.

Because it describes لوحة, and لوحة is feminine.

In Arabic, adjectives agree with the nouns they describe. So:

• masculine: أصلي
• feminine: أصلية

Here, الأصلية is the feminine form agreeing with اللوحة.

In Levantine pronunciation, it is often said more like aṣliyye.

Arabic word order is more flexible than English word order.

Starting with بهاي اللوحة الأصلية sets the scene first:

• In this original painting, there is a small detail.

This is very natural. It puts the location or context first.

You could also say a version with the existential part first, but this order is perfectly normal and often sounds smoother when you want to highlight where something is.

In Arabic, the present-tense is/are is often not said directly.

In Levantine, في is commonly used to mean there is / there are.

So:

• في تفصيل صغير = there is a small detail

That means the sentence works like this:

• بهاي اللوحة الأصلية = in this original painting
• في تفصيل صغير = there is a small detail

So the whole sentence is structured as:

• In this original painting, there is a small detail.

Because in Arabic, adjectives usually come after the noun they describe.

So:

• تفصيل صغير = a small detail

Also, the adjective agrees with the noun:

• تفصيل is masculine singular indefinite
• صغير is also masculine singular indefinite

If the noun were definite, the adjective would be definite too:

• التفصيل الصغير = the small detail

Yes, it is understandable and works in context.

However, learners should know that تفصيل can have other meanings in different contexts, such as elaboration or even tailoring. Context tells you what it means.

In everyday Levantine, some speakers might also say:

• تفصيلة صغيرة

That can sound a bit more natural for a small detail in casual speech.

So the sentence is fine, but it may lean a little closer to a more standard or careful style than very casual spoken Levantine.

In formal Arabic spelling, this word is normally written:

• الأصلية

But in casual writing, texting, and online dialect writing, people often leave hamzas out. So:

• الاصلية
• الأصلية

both usually represent the same word here.

This is very common in informal Levantine writing.

A rough pronunciation would be:

b-hay il-lawḥa l-aṣliyye fī tafṣīl ṣghīr

A few useful notes:

• هاي sounds like hay
• اللوحة begins with ل, and the article is pronounced with a doubled l sound
• الأصلية is often pronounced l-aṣliyye in connected speech
• صغير in Levantine is often pronounced closer to ṣghīr

You may also hear a more everyday version such as:

bhāl-lawḥa l-aṣliyye fī tafṣīle ṣghīre

depending on region and speaking style.