Hadithcore
Riyad as-Salihin, 1422

Mu'adh (May Allah be pleased with him) reported:

The Messenger of Allah (ﷺ) took hold of my hand and said, "O Mu'adh! By Allah I love you, so I advise you to never forget to recite after every prayer: "Allahumma a'inni ala dhikrika, wa shukrika, wa husni 'ibadatika (O Allah, help me remember You, to be grateful to You, and to worship You in an excellent manner)." <b>[Abu Dawud]</b>.

وعن معاذ رضي الله عنه أن رسول الله صلى الله عليه وسلم أخذ بيده وقال‏:‏ ‏"‏يا معاذ والله إني لأحبك‏"‏ فقال‏:‏ ‏"‏أوصيك يا معاذ لا تدعن في دبر كل صلاة تقول‏:‏ اللهم أعني على ذكرك، وشكرك، وحسن عبادتك‏"‏‏.‏ رواه أبو داود بإسناد صحيح‏.‏

References1 variant
In-Book Reference
Book 15, Hadith 15
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) The heartfelt advice of the Prophet (may Allah’s peace and blessings be upon him) for those whom he loves is for them to say: “O Allah, help me remember You, thank You, and worship You in an excellent manner.” This indicates the greatness of this advice and that it is one of the most beneficial pieces of advice for a slave, because it is true that a lover stores nothing but good and enduring for those whom he loves.<br> 2) An excellent manner of worship means that worship is sincerely devoted to Allah Almighty and done in conformity with the Sunnah of the Prophet (may Allah’s peace and blessings be upon him).<br> 3) The good moral character of the Prophet (may Allah’s peace and blessings be upon him) and his kindness to his Companions (may Allah be pleased with him) are manifested in this Hadith, as he used to be gentle with them in word and deed.<br> Note:<br> Regarding the phrase “at the end of prayer” in the aforementioned Hadiths, if it is Dhikr and praise of Allah, like Tasbih, Tahmid, and Takbir, then it should be recited after Taslim. But if it is supplication, then it is to be recited before Taslim. This is because “at the end of prayer” may refer to the time before ending prayer with Taslim or the time immediately after it. In this way, the prophetic texts are in agreement and far from contradiction.
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