The Messenger of Allah ﷺ passed by Abu Hurayra while he was planting some seedlings and said, "Abu Hurayra, what are you planting?"Abu Hurayra replied, "Some seedlings of mine."The Prophet said, "Shall I show you seedlings better for you than these?"He answered, "Yes, Messenger of Allah."The Prophet said, "Say, 'Glory be to Allah, praise be to Allah, there is no god but Allah, and Allah is the Greatest.' For each one, a tree will be planted for you in Paradise."
حدثنا أبو بكر بن أبي شيبة حدثنا عفان حدثنا حماد بن سلمة عن أبي سنان عن عثمان بن أبي سودة
أن رسول الله ﷺ مر به وهو يغرس غرسا فقال يا أبا هريرة ما الذي تغرس قلت غراسا لي قال ألا أدلك على غراس خير لك من هذا قال بلى يا رسول الله قال قل سبحان الله والحمد لله ولا إله إلا الله والله أكبر يغرس لك بكل واحدة شجرة في الجنة
[Its chain of transmission is daif] Hakim reported it, 1/512, from the hadith of Hammad, with this chain, and he said, sahih chain, and Dhahabi agreed with him, and Busiri graded it hasan.Isa bin Sinan Abu Sinan is daif in respect of his memory, the majority graded him daif, but the substance of the hadith is sahih.