Surah Al-Qalam 68:46

أَمْ تَسْـَٔلُهُمْ أَجْرًا فَهُم مِّن مَّغْرَمٍ مُّثْقَلُونَ

Or do you ask of them a payment, so they are by debt burdened down?

Translation: Saheeh International

Tafsir

Or are you asking them a fee in return for delivering the Message so that they are weighed down with debt? so that they are weighed down with what they will have to give you and that is why they do not believe.

Excerpt from Tafsir al-Jalalayn, commentary on 68:46, via Quran.com. The reader has the full commentary and 9 more tafsirs.