What is the best investment method for an amount of fifty thousand Egyptian pounds in savings certificates (Sharia Sukuk) that do not generate sufficient return to cover expenses, and what is the value of Zakat due on these certificates?

Zakat (definition) is obligatory on growing wealth that reaches the nisab (definition) (minimum threshold) upon the completion of a full Hijri year, and its amount is a quarter of a tenth (2.5%). As for profit earned during the year, there is no zakat on it unless some of it remains until the hawl (full year) of the principal, in which case it is zakat-able according to the hawl of its principal. For investment, consult specialists along with performing istikharah, and ensure that the work is permissible. Piety is a cause for an increase in sustenance and blessing therein.