If a Vaishya has two wives one of whom is a Vaishya and the other a Shudra, there is a difference between them in respect of position.
वैश्यस्य वर्तमानस्य वैश्यायां भरतर्वभ। शूद्रायां चापि कौन्तेय तयोर्विनियमः स्मृतः॥