كتاب الذكر والدعاء والتوبة والاستغفار
48  
The Book Pertaining to the Remembrance of Allah, Supplication, Repentance and Seeking Forgiveness
(9)
Chapter: The Virtue Of The Supplication: "O Allah, Give Us Good In This World And Good In The Hereafter, And Save Us From The Torment Of The Fire"
(9)
بَاب فَضْلِ الدُّعَاءِ بِاللَّهُمَّ آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الْآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ
Sahih Muslim 2690 a

Qatada asked Anas which Supplication Allah's Apostle (ﷺ) frequently made. He said:

The supplication that he (the Prophet made very frequently is this:" O Allah, grant us the good in this world and the good in the Hereafter and save us from the torment of Hell-Fire." He (Qatada) said that whenever Anas had to supplicate he made this very supplication, and whenever he (intended) to make another supplication he (inserted) this very supplication in that.
حَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، حَدَّثَنَا إِسْمَاعِيلُ، - يَعْنِي ابْنَ عُلَيَّةَ - عَنْ عَبْدِ الْعَزِيزِ، - وَهُوَ ابْنُ صُهَيْبٍ - قَالَ سَأَلَ قَتَادَةُ أَنَسًا أَىُّ دَعْوَةٍ كَانَ يَدْعُو بِهَا النَّبِيُّ صلى الله عليه وسلم أَكْثَرَ قَالَ كَانَ أَكْثَرُ دَعْوَةٍ يَدْعُو بِهَا يَقُولُ ‏ "‏ اللَّهُمَّ آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ ‏"‏ ‏.‏ قَالَ وَكَانَ أَنَسٌ إِذَا أَرَادَ أَنْ يَدْعُوَ بِدَعْوَةٍ دَعَا بِهَا فَإِذَا أَرَادَ أَنْ يَدْعُوَ بِدُعَاءٍ دَعَا بِهَا فِيهِ ‏.‏
Reference : Sahih Muslim 2690a
In-book reference : Book 48, Hadith 36
USC-MSA web (English) reference : Book 35, Hadith 6506
  (deprecated numbering scheme)