laravel: update two table when Request is Reject

hello team I have two table. reqs and item so I want to update req.status to reject and then update item.quantity equal to item_requested. please assist here is my controller only update req_status

 public function rejectRequest($id)
{
    $reject = Ssrareq::where('req_id',$id)->update(['status_req'=>'reject']);
    return back();
}

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