And if you turn away [from my advice] - then no payment have I asked of you. My reward is only from Allāh, and I have been commanded to be of the Muslims [i.e., those who submit to Allāh]."
If you ignore my invitation, then you know that I have not asked for any reward from you for my conveying the message of my Lord to you. My reward is only from Allah, whether you have faith in me or not. Allah has instructed me to be of those who devote themselves to Him with obedience and good actions.