Al-Adab Al-Mufrad · Book 31 · Hadith 682
حَدَّثَنَا مُسَدَّدٌ، قَالَ: حَدَّثَنَا عَبْدُ الْوَارِثِ، عَنْ عَبْدِ الْعَزِيزِ، عَنْ أَنَسٍ قَالَ: كَانَ أَكْثَرُ دُعَاءِ النَّبِيِّ صلى الله عليه وسلم: اللَّهُمَّ آتِنَا فِي الدُّنْيَا حَسَنَةً، وَفِي الْآخِرَةِ حَسَنَةً، وَقِنَا عَذَابَ النَّارِ.
Anas said, "The most frequent supplication of the Prophet, may Allah bless him and grant him peace, was, 'O Allah, give us good in this world and good in the Next World and protect us from the punishment of the Fire.'"
Sahih