How to check auth login 3 table laravel?

i have a auth login that i make, which have 3 table to auth as admin, how can i fix this? thx

public function postlogin(Request $request)
{
$admin = DB::table('M_ADMIN')->select(['M_ADMIN.PERNR'])->get();
$user  = DB::table('M_HEAD_SALLARY')
        ->join('M_USER', 'M_USER.PERNR', '=', 'M_HEAD_SALLARY.PERNR')
        ->where('M_USER.PERNR','LIKE','%'.$admin.'%') 
        ->where('M_HEAD_SALLARY.USRID_LONG',strtoupper($request->USRID_LONG))
        ->where('M_USER.PASS',$request->PASS)
        ->first();
    return redirect('/login');
}

via Chebli Mohamed