This religion is easy. Do not make it a rigor, or you shall be overcome. Be steadfast, seek the closeness of Allah, grow in virtue, and implore His appeasement day and night.
- Hadith The Prophet Muhammad (SAW), as reported by Abu Hurairah
Nothing in here about not playing music, or keeping your beard long, or stopping women from driving cars. As a political leader, sometimes Muhammad had to make a lot of ad hoc decisions about what his particular Ummah had to do at that particular time. I see no reason to believe he wanted a troop of scholars to comb through everything everyone remembered about what he said and construct a set of prohibitions that are not mentioned anywhere in the Koran