How to pass an entry without invoice stock maintain?

You can do maintain through Materials issue note . The same time you can do finance set up as Debit the sales A/c instead of materiel issue account and credit the inventory if you want to keep the sale accountability.

It is impossible, If and ONLY we do trading operation, according to principles of justice, honesty. The invoice is sent by the seller (contractor, executor) to the buyer (customer) after the final acceptance by the buyer (customer) of the goods or services. It is a legal order. Depending on the legislation of a particular state, the invoice can perform various functions. For example, in the EU countries the invoice is used to confirm the payment of VAT and excises.  

In every delivery there must be an invoice or delivery note in a proper stocks trading

pass as entry stock by delivery note no need invoice