Laravel Eloquent Inner join where multiple data from another table return in property as an array

Question

Suppose, I have two tables; tableA and tableB. For tableA single row's id there are multiple rows in tableB.

Now I want all tableA data including tableB, that's matches by id (tableA->id === tableB->blood_request_id)

The return will be

[
 ...tableA data,
 'blood_request_id' => [1, 2]
]