25:72
وَالَّذِينَ لَا يَشْهَدُونَ الزُّورَ وَإِذَا مَرُّوا بِاللَّغْوِ مَرُّوا كِرَاماً
Those who witness no falsehood, and, if they pass by futility, they pass by it with honourable (avoidance);
28:55
وَإِذَا سَمِعُوا اللَّغْوَ أَعْرَضُوا عَنْهُ وَقَالُوا لَنَا أَعْمَالُنَا وَلَكُمْ أَعْمَالُكُمْ سَلَامٌ عَلَيْكُمْ لَا نَبْتَغِي الْجَاهِلِينَ
And when they hear vain talk, they turn away therefrom and say: "To us our deeds, and to you yours; peace be to you: we seek not the ignorant."