The Gemara says you have to tie no fewer than 7 chulyos and no more than 13. According to most shitas, 13 is the ideal. My question is, according to the Rambam, can you do whatever you want - 7 or 13?
Do Teimani (Yemenite) Jews who follow the Rambam have a certain custom? From what I've observed, some tie 7, while others tie 13. Is this just personal preference or is it based on varying customs for different parts of Yemen? Is there any difference between the custom for a tallis katan versus a tallis gadol?
BTW, when it comes to techeles, I have seen Ptil Tekhelet tying guides bring both 7 and 13.