ZFS allow and unallow

I can not display "zfs status " it is asking create zfs allow and unallow.
What is is this? I can df -h and see my poolset, i can destroy and create zfs
Just cant do zfs status . I added zfs allow bigpool and no problem.
Can some explain to me about zfs allowunallow? please
There is no zfs status. Are you sure you're not just seeing the ZFS usage screen which mentions zfs allow|unallow at the bottom?