I came to the Messenger of Allah ﷺ and said, "Messenger of Allah, guide me to a deed, for I have grown old, weak, and heavy."He said, "Say Allahu Akbar a hundred times, praise Allah a hundred times, and glorify Allah a hundred times. This is better than a hundred horses bridled and saddled for the cause of Allah, better than a hundred sacrificial camels, and better than freeing a hundred slaves."
حدثنا إبراهيم بن المنذر الحزامي حدثنا أبو يحيى زكريا بن منظور حدثني محمد بن عقبة بن أبي مالك
أتيت إلى رسول الله ﷺ فقلت يا رسول الله دلني على عمل فإني قد كبرت وضعفت وبدنت فقال كبري الله مائة مرة واحمدي الله مائة مرة وسبحي الله مائة مرة خير من مائة فرس ملجم مسرج في سبيل الله وخير من مائة بدنة وخير من مائة رقبة
No references are available.
[Its chain is daif] Recorded by Hakim, 1/513, 514, who graded it sahih, but Dhahabi challenged him over Zakariya bin Manzoor, mentioned earlier, no. 2481, and Busiri graded it daif because of him. The hadith has daif supporting narrations.