Quran 15:97 from Surah Al-Hijr on Divine Marvels.
وَلَقَدۡ نَعۡلَمُ أَنَّكَ يَضِيقُ صَدۡرُكَ بِمَا يَقُولُونَ
English translation: And verily We know that [you] (is) straitened your breast by what they say
Transliteration: walaqad na'lamu annaka yadiqu sadruka bima yaquluna