1- Does ב"ד sell the עבד or does ב"ד force him to sell himself 2-Who receives the money from the sale (גזלן, ב"ד, נגנזל) 3- Does the נגזל have monetary rights to force the sale or is it a disciplinary tool of ב"ד. Last Q- 4- Is the עבדות of מוכר ב"ד of the same category as מכרוהו ב"ד, or are they to different types of עבדות.