Ahoi Ashtami Mala: Why do women wear Syahu Mala on Ahoi Ashtami, what to do with it after the fast?

In the worship of Ahoi Ashtami, Syahu Mala is worn, which has a silver locket and a picture of Syahu Mata on it. This locket also has pearls attached to it, which are threaded in Kalave (red thread). It is also called the garland of Syahu Mata, which is worn after fasting on the first Ahoi Ashtami after the birth of a child.