How did our beloved Prophet Muhammad (s.a.w) know how to make salaat?

when prophet(saw) went on meraz Allah gave him five time salah if u read Quran u find this but if u want to know excat time of salah or rakah of salah u never find in Quran u find this in hadith(sunnah) because true hadith(sunnah) are the defination of Quran which was define by our prophet(saw)u asked me why u say true hadith are haidth are rong too? yes some lier people made rong hadith and said this is hadith of prophet(saw) but thanks to imam Bukhari Muslim and many others muhaddasin who wrote the hadith and told to ummah abut true hadith(sunnah) and rong hadith