Al-Fath • BN-TAFSEER-IBN-E-KASEER
﴿ سَيَقُولُ لَكَ ٱلْمُخَلَّفُونَ مِنَ ٱلْأَعْرَابِ شَغَلَتْنَآ أَمْوَٰلُنَا وَأَهْلُونَا فَٱسْتَغْفِرْ لَنَا ۚ يَقُولُونَ بِأَلْسِنَتِهِم مَّا لَيْسَ فِى قُلُوبِهِمْ ۚ قُلْ فَمَن يَمْلِكُ لَكُم مِّنَ ٱللَّهِ شَيْـًٔا إِنْ أَرَادَ بِكُمْ ضَرًّا أَوْ أَرَادَ بِكُمْ نَفْعًۢا ۚ بَلْ كَانَ ٱللَّهُ بِمَا تَعْمَلُونَ خَبِيرًۢا ﴾
“Those of the bedouin who stayed behind will say unto thee: “[The need to take care of] our chattels and our families kept us busy: do then, [O Prophet,] ask God to forgive us!” [Thus,] they will utter with their tongues something that is not in their hearts. Say: “Who, then, has it in his power to avert from you aught that God may have willed, whether it be His will to harm you or to confer a benefit on you? Nay, but God is fully aware of what you do!”
Please check ayah 48:14 for complete tafsir.