Sahih al-Bukhari 6473

أَنَّ مُعَاوِيَةَ كَتَبَ إِلَى الْمُغِيرَةِ أَنِ اكْتُبْ إِلَىَّ بِحَدِيثٍ سَمِعْتَهُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ فَكَتَبَ إِلَيْهِ الْمُغِيرَةُ أَنِّي سَمِعْتُهُ يَقُولُ عِنْدَ انْصِرَافِهِ مِنَ الصَّلاَةِ ‏ "‏ لاَ إِلَهَ إِلاَّ اللَّهُ، وَحْدَهُ لاَ شَرِيكَ لَهُ، لَهُ الْمُلْكُ، وَلَهُ الْحَمْدُ، وَهْوَ عَلَى كُلِّ شَىْءٍ قَدِيرٌ ‏"‏‏.‏ ثَلاَثَ مَرَّاتٍ قَالَ وَكَانَ يَنْهَى عَنْ قِيلَ وَقَالَ وَكَثْرَةِ السُّؤَالِ، وَإِضَاعَةِ الْمَالِ، وَمَنْعٍ وَهَاتِ، وَعُقُوقِ الأُمَّهَاتِ، وَوَأْدِ الْبَنَاتِ‏.

“(the clerk of Al-Mughira bin Shu`ba) Muawiya wrote to Al-Mughira: "Write to me a narration you have heard from Allah's Messenger ﷺ." So Al-Mughira wrote to him, "I heard him saying the following after each prayer: 'La ilaha illal-lahu wahdahu la sharika lahu, lahu-l-mulk wa lahuI-hamd, wa huwa 'ala kulli Shai-in qadir.' He also used to forbid idle talk, asking too many questions (in religion), wasting money, preventing what should be given, and asking others for something (except in great need), being undutiful to mothers, and burying one's little daughters (alive)”