Or is it that thou dost ask for a reward, so that they are burdened with a load of debt?-
The prophets of Allah ask for no reward to
preach the Message of Allah and direct men to the right
Path. Why then do men shun them and persecute those
who seek to bring blessings to them?
Yusuf Ali, Abdullah. Translation and Commentary of the Quran. (surah 52 verse 40. Quran Arabic with English Translation & Commentary (Tafsir) by Abdullah Yusuf Ali, Free Download (quran4u.com)