Maybe/app/views/transactions/_header.html.erb

<%# locals: (entry:) %>

<%= tag.header class: "mb-4 space-y-1", id: dom_id(entry, :header) do %>
  <div class="flex items-center gap-4">
    <h3 class="font-medium">
      <span class="text-2xl">
        <%= format_money -entry.amount_money %>
      </span>

      <span class="text-lg text-secondary">
        <%= entry.currency %>
      </span>
    </h3>

    <% if entry.transaction.transfer? %>
      <%= lucide_icon "arrow-left-right", class: "text-secondary mt-1 w-5 h-5" %>
    <% end %>
  </div>

  <span class="text-sm text-secondary">
    <%= I18n.l(entry.date, format: :long) %>
  </span>
<% end %>