[Machine] On the authority of Anas, when Allah says, "We made iron soft and easy to shape" [Surah Saba, verse 11], Anas said, "Luqman was with Dawood (David) as he was hammering a shield. He grabbed it like this with his hand and started to twist it. Luqman was amazed and wanted to ask him but his wisdom prevented him from asking. When Dawood finished, he poured water on his hand and said, 'This is a true shield of war.' Luqman said, 'Silence is from wisdom, and few are those who practice it. I wanted to ask you, but you kept silent until you satisfied me.'" This hadith is reported by Muslim and Al-Bukhari did not report it.  

عَنْ أَنَسٍ عِنْدَ قَوْلِهِ ﷻ {وَأَلَنَّا لَهُ الْحَدِيدَ أَنِ اعْمَلْ سَابِغَاتٍ} [سبأ 11] قَالَ أَنَسٌ إِنَّ لُقْمَانَ كَانَ عِنْدَ دَاوُدَ وَهُوَ يَسْرُدُ الدِّرْعَ فَجَعَلَ يَفْتِلُهُ هَكَذَا بِيَدِهِ فَجَعَلَ لُقْمَانُ يَتَعَجَّبُ وَيُرِيدُ أَنْ يَسْأَلَهُ وَيَمْنَعُهُ حِكْمَتُهُ أَنْ يَسْأَلَهُ فَلَمَّا فَرَغَ مِنْهَا صَبَّهَا عَلَى نَفْسِهِ فَقَالَ نِعْمَ دِرْعُ الْحَرْبِ هَذِهِ فَقَالَ لُقْمَانُ الصَّمْتُ مِنَ الْحِكْمَةِ وَقَلِيلٌ فَاعِلُهُ كُنْتُ أَرَدْتُ أَنْ أَسْأَلَكَ فَسَكَتُّ حَتَّى كَفَيْتَنِي «صَحِيحٌ عَلَى شَرْطِ مُسْلِمٍ وَلَمْ يُخْرِجَاهُ» على شرط مسلم