﴿ قُلْ مَا سَأَلْتُكُم مِّنْ أَجْرٍۢ فَهُوَ لَكُمْ ۖ إِنْ أَجْرِىَ إِلَّا عَلَى ٱللَّهِ ۖ وَهُوَ عَلَىٰ كُلِّ شَىْءٍۢ شَهِيدٌۭ ﴾

“Say: “No reward have I ever asked of you [out of anything] that is yours: my reward rests with none but God, and He is witness unto everything!””

Please check ayah 34:50 for complete tafsir.