"We will surely send the she-camel as a trial for them (in response to their insistently asking you to show a miracle). So watch them (and observe what they do), and bear patiently (with their misconduct toward you)
`We, in order to distinguish the good from the bad of them, are going to send a she-camel (in a state that she is not to be interfered with, in anyway). Therefore, wait (till their end comes), and patiently persevere (against their insults)
Indeed, We disclosed to them a she-camel as an object of trial... So, observe them and be patient.
Al-muntakhab fi tafsir al-Qur'an al-Karim
"We are sending the she -camel as a trial to prove their wickedness". "And so keep them in view in order to observe their action, and have patience."