Anklets are among the [accessories of] adornment that a woman is authorized to beautify herself with, as long as she shows them only to those whom Allah authorized her to show them to. Regarding [women’s] adornment, Allah says: “...and not expose their adornment except to their husbands, their fathers, their husbands' fathers, their sons, their husbands' sons, their brothers, their brothers' sons, their sisters' sons, their women, that which their right hands possess, or those male attendants having no physical desire, or children who are not yet aware of the private aspects of women.” (Surah An-Nur (The Light): 31) In addition, there is a specific constraint regarding anklets and their equivalents: The prohibition of stamping their feet to reveal their adornment. Allah says: “And let them not stamp their feet to make known what they conceal of their adornment.” (Surah An-Nur (The Light): 31) And Allah is the Highest and the Best-knowing. الخلاخل من جملة زينة المرأة المأذون لها في التزين بها، بشرط ألا تبديها إلا لمن أذن الله في إبدائها لهم ، وقد حددهم في قوله تعالى : ( ولا يبدين زينتهن إلاّ لبعولتهن أو آبائهن أو آباء بعولتهن أو أبنائهن أو أبناء بعولتهن أو إخوانهن أو بني إخوانهن أو بني أخواتهن أو نسائهن أو ما ملكت أيمانهن أو التابعين غير أولي الإربة من الرجال أو الطفل الذين لم يظهروا على عورات النساء). [النور:31]. هذا في الزينة عموماً ، وهنالك قيد يزاد بخصوص الخلاخل وما في معناها وهو : النهي عن ضرب الأرجل بها ليسمع صوتها ، قال تعالى : ( ولا يضربن بأرجلهن ليعلم ما يخفين من زينتهن ). [النور: 31 والله أعلي وأعلم.
Please refer to this answer from MuslimMatters.org: "Allah subḥānahu wa ta'āla (glorified and exalted be He) had a plan for you before you were born, and He still has a plan for you. Allah’s plan for you is necessary and glorious. His plan is vital to your success and important to the world. Allah’s plan is not set in stone, as if we were robots pre-programmed in the factory. That would strip us of free will and deny our natures. Rather, I believe that Allah has a flexible plan for each human being: a plan that allows that person to benefit the world with his/her unique talents. This is in fact the Islamic view of al-Qadar, or predestination. There is no doubt that Allah has decreed everything that happens in the universe from the beginning of time to the end, and that Allah has written it all in al-Lawh al-Mahfooz (the Book of Decrees)."