"And We bound their hearts" with faith. Muhammad said: The meaning is: We inspired them with patience and steadied their hearts. "We would have certainly spoken an atrocious lie" Qatadah said: meaning: an injustice.
﴿وربطنا على قُلُوبهم﴾ بِالْإِيمَانِ. قَالَ مُحَمَّدٌ: الْمَعْنَى: أَلْهَمْنَاهُمُ الصَّبْرَ، وَثَبَّتْنَا قُلُوبَهُمْ. ﴿لَقَدْ قُلْنَا إِذا شططا﴾ قَالَ قَتَادَة: يعنون: جورا.