They also form this thought

"They also form this thought: `I should accept all sufferings for the 
sake of all sentient beings, and enable them to escape from the abyss of 
immeasurable woes of birth and death. I should accept all suffering for 
the sake of all sentient beings in all worlds, in all states of misery, 
forever and ever, and still always cultivate the foundations of goodness 
for the sake of all beings. Why? I would rather take all this suffering 
on myself than to allow sentient beings to fall into hell.  I should be 
a hostage in those perilous places - hells, animal realms, the nether 
world, etc. - as a ransom to rescue all sentient beings in states of woe 
and enable them to gain liberation." (Flower Ornament Scripture pp. 
534-535)