As an auditor, it is essential to verify the existence, ownership, and valuation of assets and liabilities of the company. The following are the duties of an auditor regarding the verification of an asset and liabilities:

1. Verify the existence of assets and liabilities: The auditor should verify the physical existence of assets and liabilities by taking a physical count of inventory, inspecting the title deeds of assets, and confirming the balances of liabilities with third parties.

2. Verify the ownership of assets and liabilities: The auditor should verify the ownership of assets and liabilities by examining the documentation and records, such as title deeds, deeds of sale, contracts, and agreements.

3. Verify the valuation of assets and liabilities: The auditor should verify the valuation of assets and liabilities by examining the accounting policies and procedures used by the company, comparing the values with market prices, and assessing the reasonableness of the estimates made by the management.

4. Report any discrepancies: If the auditor finds any discrepancies in the verification of assets and liabilities, he should report them to the management and suggest appropriate corrective actions.

5. Evaluate the adequacy of disclosures: The auditor should evaluate the adequacy of disclosures made in the financial statements regarding the assets and liabilities and ensure that all relevant information is disclosed properly.

Overall, the auditor's duty is to provide reasonable assurance that the financial statements present a true and fair view of the company's assets and liabilities.