You are not superintendent over them.
You have no power over them
You are not charged to oversee them
Thou art not warder over them -
You are not on them with dominating/controlling
Mohammad, bear in mind that you are not in charge of them [and your job is only to remind them.]
You are not at all a guardian over them
Thou art not appointed a keeper over them
You are not imposed upon them (as) an oppressor and persecutor
You are not (appointed) a keeper, stern and hard, to (compel) them
You are not a dictator over them