You can make this custom View to add the information to the screen:

<notebook position="before">
    <field name="move_dest_ids" string="">
      <tree>
         <field name="sale_line_id" string="Sales Details"/>
         <field name="state" invisible="1"/>
      </tree>
    </field>    
</notebook>

You can make this custom View to add the information to the report:

Note: Create this View from the Inherited Views tab of the original View (report_mrporder) to make sure Odoo generates the key for you.

<div t-if="o.workorder_ids" position="before">
  <div class="row mt32 mb32">
    <div class="col-12">
      <strong>Sales Information:</strong><br/>
      <span t-field="o.move_dest_ids.sale_line_id"/>
    </div>
  </div>
</div>

For a Sales Order with a line like this:

The related Manufacturing Order would look like this:

And the report would look like this: