I try to imagine what the slave thinks, if it thinks, when it is placed on the stage to be sold.
Completely naked and tied up in front of the buyers' audience, it's just a set of muscles and flesh being marketed.
It is when it should pray, if beasts have religion, to the new owner be less cruel and violent than the previous one.
The animal should hope that the new buyers will give him less heavy and unworthy jobs.
Let him be less raped, tortured and humiliated. Let the new owners scourge and torture him only when it deserves, punish him fairly and only for the need to make him work and fulfill his duties.
Let the new owners do not want to castrate it, cut off his tongue or blind him as so many slave owners do.
That in the new cell it does not feel to much hungry or cold.