In my opinion the slavery cannot attach to Krishna (Draupadi), as she was staked by the king (Yudhisthira) after he lost himself and ceased to be his own master.
न हि दासीत्वमापन्ना कृष्णा भवितुमर्हति। अनीशेन हि राज्ञैषा पणे न्यस्तेति मे मतिः॥