Imam Ahmad recorded that Abu Talhah Al-Ansari said: "One morning the Messenger of Allah was in a cheerful mood and looked happy. They said, `O Messenger of Allah, this morning you are in a cheerful mood and look happy.' He said,

«أَجَلْ أَتَانِي آتٍ مِنْ رَبِّي عَزَّ وَجَلَّ فَقَالَ: مَنْ صَلَّى عَلَيْكَ مِنْ أُمَّتِكَ صَلَاةً، كَتَبَ اللهُ لَهُ بِهَا عَشْرَ حَسَنَاتٍ وَمَحَا عَنْهُ عَشْرَ سَيِّئَاتٍ، وَرَفَعَ لَهُ عَشْرَ دَرَجَاتٍ، وَرَدَّ عَلَيْهِ مِثْلَهَا»

(Of course just now someone ﴿an angel﴾ came to me from my Lord and said, "Whoever among your Ummah sends Salah upon you, Allah will record for him ten good deeds and will erase for him ten evil deeds, and will raise his status by ten degrees, and will return his greeting with something similar to it.'')'' This is also a good chain, although they (Al-Bukhari and Muslim) did not report it.