Imam Ali (AS) said about the distinguishing characteristics of the pious one, ‘Verily when he is silent, his own silence does not distress him, and when he laughs he does not do so loudly.
الإمامُ عليٌّ (عَلَيهِ الّسَلامُ) ـ في علامةِ المُتَّقي ـ: إن صَمَتَ لَم يَغُمَّهُ، وإن ضَحِكَ لَم يَعلُ صَوتُهُ.
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Nahj al-Balāgha #982If he is silent his silence does not grieve him, if he laughs he does not raise his voice, and if he is wronged he endures till Allāh takes...