According to ISO 19011:2018 Clause 5.3.2 and Annex B (Audit Sampling):
Sampling allows auditors to:
Reduce audit time while still covering sufficient evidence (A),
Provide statistically valid assurance and confidence in the results (C).
Sampling does not replace auditor judgment (D), nor is it intended to prevent conflict (F) or be reused blindly for future audits (E).
Reference: ISO 19011:2018 Clause 5.3.2, Annex B.