Sulayman ibn Yasar سليمان بن يسار مولى ميمونة بنت الحارث · The Book on Military Expeditions

"The Prophet (ﷺ) was met by some affair that made him happy, so he prostrated to Allah." This Hadith is Hasan Gharib, we do not know of it except from this route, as a narration of Bakkar bin 'Abdul-'Aziz. This is acted upon according to most of the people of knowledge, they held the view that one could perform the prostration of gratitude. And Bakkar bin 'Adbul-'Aziz bin Abi Bakrah is Muqarib (average) in Hadith.