Mahabharata 12.79.37

भीष्म उवाच · bhīṣma uvāca

अपारे यो भवेत्पारमप्लवे यः प्लवो भवेत्शूद्रो वा यदि वाप्यन्यः सर्वथा मानमर्हति

apāre yo bhavetpāramaplave yaḥ plavo bhavetśūdro vā yadi vāpyanyaḥ sarvathā mānamarhati

Our plain-language meaning of this verse is waiting for scholar review.