LAR_Maintenance/app/Models/MaintenanceHistory.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class MaintenanceHistory extends Model
{
    use HasFactory;

    protected $fillable = [
        'maintenance_id',
        'start_at',
        'finished_at',
    ];

    public function maintenance()
    {
        return $this->BelongsTo(Maintenance::class);
    }
}