Narrated Warrad:

(The clerk of Al-Mughira) Muawiya wrote to Al-Mughira 'Write to me what you have heard from Allah's Apostle.' So he (Al-Mughira) wrote to him: Allah's Prophet used to say at the end of each prayer: "La ilaha illalla-h wahdahu la sharika lahu, lahul Mulku, wa lahul Hamdu wa hula ala kulli shai'in qadir. 'Allahumma la mani' a lima a'taita, wala mu'tiya lima mana'ta, wala yanfa'u dhuljadd minkal-jadd." He also wrote to him that the Prophet used to forbid (1) Qil and Qal (idle useless talk or that you talk too much about others), (2) Asking too many questions (in disputed Religious matters),
(3) And wasting one's wealth by extravagance;
(4) and to be undutiful to one's mother (5) and to bury the daughters alive (6) and to prevent your favors (benevolence to others (i.e. not to pay the rights of others (7) And asking others for something (except when it is unavoidable).

حَدَّثَنَا مُوسَى، حَدَّثَنَا أَبُو عَوَانَةَ، حَدَّثَنَا عَبْدُ الْمَلِكِ، عَنْ وَرَّادٍ، كَاتِبِ الْمُغِيرَةِ قَالَ كَتَبَ مُعَاوِيَةُ إِلَى الْمُغِيرَةِ اكْتُبْ إِلَىَّ مَا سَمِعْتَ مِنْ رَسُولِ اللَّهِ ﷺ. فَكَتَبَ إِلَيْهِ إِنَّ نَبِيَّ اللَّهِ ﷺ كَانَ يَقُولُ فِي دُبُرِ كُلِّ صَلاَةٍ " لاَ إِلَهَ إِلاَّ اللَّهُ، وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ، وَهْوَ عَلَى كُلِّ شَىْءٍ قَدِيرٌ، اللَّهُمَّ لاَ مَانِعَ لِمَا أَعْطَيْتَ، وَلاَ مُعْطِيَ لِمَا مَنَعْتَ، وَلاَ يَنْفَعُ ذَا الْجَدِّ مِنْكَ الْجَدُّ ". وَكَتَبَ إِلَيْهِ إِنَّهُ كَانَ يَنْهَى عَنْ قِيلَ وَقَالَ، وَكَثْرَةِ السُّؤَالِ، وَإِضَاعَةِ الْمَالِ، وَكَانَ يَنْهَى عَنْ عُقُوقِ الأُمَّهَاتِ وَوَأْدِ الْبَنَاتِ وَمَنْعٍ وَهَاتِ.