Abu Dharr reported,

Abu Dharr said, "Messenger of Allah, the people of wealth have taken away the rewards. They pray as we pray and fast as we fast, but they have surplus wealth which they give in charity, while we have no wealth to give in charity."The Messenger of Allah ﷺ said, "Abu Dharr, shall I teach you words by which you will catch up with those who have surpassed you, and none will overtake you except those who do the same as you?"He said, "Yes, Messenger of Allah."He said, "Say Allahu Akbar thirty-three times after every prayer, praise Allah thirty-three times, glorify Him thirty-three times, and seal it with 'There is no god but Allah alone, with no partner. To Him belongs the dominion and to Him belongs all praise, and He is over all things capable.' His sins will be forgiven, even if they were like the foam of the sea."

Azami 11055

Sahih

عن أبي ذر قال

يا رسول الله! ذهب أصحاب الدثور بالأجور، يصلون كما نصلي، ويصومون كما نصوم، ولهم فضول أموال يتصدقون بها، وليس لنا مال نتصدق به، فقال رسول الله ﷺ: يا أبا ذر ألا أعلمك كلمات تدرك بهن من سبقك، ولا يلحقك من خلفك إلا من أخذ بمثل عملك؟ قال: بلى يا رسول الله، قال: تكبر الله عز وجل دبر كل صلاة ثلاثا وثلاثين، وتحمده ثلاثا وثلاثين، وتسبحه ثلاثا وثلاثين، وتختمها بلا إله إلا الله وحده لا شريك له، له الملك وله الحمد، وهو على كل شيء قدير، غفرت له ذنوبه ولو كانت مثل زبد البحر.

الأعظمي 11055صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Supplications, remembrances, and prayer upon the chosen Prophet ﷺ
Chapter
Supplications of adhan and prayer, and what is related to them
Section
Remembrances after the obligatory prayers and at their conclusions
Numbering
Jami al-Kamil 11055 (2nd edition)
Azami 11055