<prompt> Translate the following text to EnglishSher-Mandal, mnara wa pembe nane ulio kusini mwa msikiti, ulitumika kama jumba la furaha la Jenerali, lakini ilikuwa ni kifo cha mpinzani wake na mrithi, Humayun.  <response>: Sher-Mandal, the octagonal tower due south of the mosque, served as the Generals pleasure-palace, but it was to be the death of his rival and successor, Humayun . 