وَرَبَطۡنَا عَلَىٰ قُلُوبِهِمۡ إِذۡ قَامُواْ فَقَالُواْ رَبُّنَا رَبُّ ٱلسَّمَٰوَٰتِ وَٱلۡأَرۡضِ لَن نَّدۡعُوَاْ مِن دُونِهِۦٓ إِلَٰهٗاۖ لَّقَدۡ قُلۡنَآ إِذٗا شَطَطًا ١٤
And We bound [i.e., made firm] their hearts when they stood up and said, "Our Lord is the Lord of the heavens and the earth. Never will we invoke besides Him any deity. We would have certainly spoken, then, an excessive transgression.
Translation: Saheeh International (English)
Each word's meaning and sound
And I strengthened their hearts with faith and firmness on it, and to be patient in leaving one’s homeland for its sake, when they stood to proclaim their faith in Allah alone in front of the disbelieving king, and they said: The Lord I believe in and worship is the Lord of the heavens and earth. I will never worship the gods you have falsely claimed besides Him. I will have said an unjust and far-off statement if I worship others besides Him.
Al-Mukhtasar in interpreting the Noble Quran