discourse/app/assets/javascripts/admin/templates/modal/admin-suspend-user.hbs

{{#d-modal-body title="admin.user.suspend_modal_title"}}
  <div class='duration-controls'>
    <label>
      {{i18n 'admin.user.suspend_duration'}}
      {{text-field value=duration maxlength="5" autofocus="autofocus" class="suspend-duration"}}
      {{i18n 'admin.user.suspend_duration_units'}}
    </label>
  </div>

  <div class='reason-controls'>
    <label>
      <div class='suspend-reason-label'>
        {{#if siteSettings.hide_suspension_reasons}}
          {{{i18n 'admin.user.suspend_reason_hidden_label'}}}
        {{else}}
          {{{i18n 'admin.user.suspend_reason_label'}}}
        {{/if}}
      </div>

      {{text-field
        value=reason
        class="suspend-reason"
        placeholderKey="admin.user.suspend_reason_placeholder"}}
    </label>
  </div>

  <label>
    <div class='suspend-message-label'>
      {{i18n "admin.user.suspend_message"}}
    </div>
    {{textarea
      value=message
      class="suspend-message"
      placeholder=(i18n "admin.user.suspend_message_placeholder")}}
  </label>

{{/d-modal-body}}

<div class="modal-footer">
  {{d-button
    class="btn-danger perform-suspend"
    action="suspend"
    disabled=submitDisabled
    icon="ban"
    label="admin.user.suspend"}}
  <a {{action "closeModal"}} class="cancel-suspend">{{i18n 'cancel'}}</a>
</div>