in denouncing wrongdoing, 'By Allah, I would rather spend a sleepless night on the thorns of the Sa'dan tree [a type of prickly tree], or be driven as a prisoner in shackles, than meet Allah and His Messenger on the Day of Resurrection having wronged any servant or having usurped any kind of worldly wealth. How can I wrong anyone for the sake of this soul that is rapidly hastening towards destruction and is to remain under the earth for a long time?'