The Book of Prayer
Bulugh al-Maram #394
كتاب الصلاة
وَعَنْ مُعَاذِ بْنِ جَبَلٍ - رضى الله عنه - "أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ لَهُ: " أُوصِيكَ يَا مُعَاذُ: لَا تَدَعَنَّ دُبُرَ كُلِّ صَلَاةٍ أَنْ تَقُولُ: اَللَّهُمَّ أَعِنِّي عَلَى ذِكْرِكَ وَشُكْرِكَ وَحُسْنِ عِبَادَتِكَ" رَوَاهُ أَحْمَدُ, وَأَبُو دَاوُدَ, وَالنَّسَائِيُّ بِسَنَدٍ قَوِيٍّ.
Narrated Mu'adh bin Jabal (RA) Allah's Messenger (ﷺ) told me, “O Mu'adh, I will give you some advice - Never leave the recitation of this supplication after every prayer:
'O Allah, help me to remember You, thank You, and worship You perfectly.'”
[Ahmad, Abu Dawud and an-Nasa'i reported it through a strong chain of narrators].
وَعَنْ مُعَاذِ بْنِ جَبَلٍ - رضى الله عنه - "أَنَّ رَسُولَ اَللَّهِ - صلى الله عليه وسلم -قَالَ لَهُ : " أُوصِيكَ يَا مُعَاذُ : لَا تَدَعَنَّ دُبُرَ كُلِّ صَلَاةٍ أَنْ تَقُولُ : اَللَّهُمَّ أَعِنِّي عَلَى ذِكْرِكَ وَشُكْرِكَ وَحُسْنِ عِبَادَتِكَ" رَوَاهُ أَحْمَدُ , وَأَبُو دَاوُدَ , وَالنَّسَائِيُّ بِسَنَدٍ قَوِيٍّ .
Narrated Mu'adh bin Jabal (RA) Allah's Messenger (ﷺ) told me, "O Mu'adh, I will give you some advice - Never leave the recitation of this supplication after every prayer: 'O Allah, help me to remember You, thank You, and worship You perfectly.'" [Ahmad, Abu Dawud and an-Nasa'i reported it through a strong chain of narrators].
— Bulugh al-Maram, Hadith 394