Al-An'am 6:90

Ola-ika allatheena hadaAllahu fabihudahumu iqtadih qul la as-alukumAAalayhi ajran in huwa illa thikra lilAAalameen

Those are the ones whom Allāh has guided, so from their guidance take an example. Say, "I ask of you for it [i.e., this message] no payment. It is not but a reminder for the worlds."

Those are the people whom Allah has guided. So, it is their guidance that you should follow. Say, “I ask you no reward for it. It is nothing but an advice for all the worlds.”