Self-reflection and contentment in Islamic teachings
Nahj al-Balāgha|Volume 1|Book 3|Chapter 349
وَمَنْ كَثُرَ كَلاَمُهُ كَثُرَ خَطَؤُهُ، وَمَنْ كَثُرَ خَطَؤُهُ قَلَّ حَيَاؤُهُ، وَمَنْ قَلَّ حَيَاؤُهُ قَلَّ وَرَعُهُ، وَمَنْ قَلَّ وَرَعُهُ مَاتَ قَلْبُهُ، وَمَنْ مَاتَ قَلْبُهُ دَخَلَ النَّارَ.
He who speaks more commits more errors. He who commits more errors becomes shameless. He who is shameless will have less fear of Allāh. He whose fear of Allāh is less, his heart dies. He whose heart dies enters the Fire.