"Yogavāsistha" was translated into Persian by Nizamuddin Panipati during the reign of:

1. The question asks about the period when Nizamuddin Panipati translated the "Yogavāsistha" into Persian. 2. "Yogavāsistha" is a major Sanskrit text on Hindu philosophy. 3. Emperor Akbar showed great interest in understanding different religions and commissioned the translation of numerous Sanskrit texts into Persian at his Maktab Khana (translation bureau). 4. Historical sources confirm that Nizamuddin Panipati was one of the scholars active during Akbar's reign and was involved in translation projects, including that of the Atharvaveda and potentially the "Yogavāsistha". While later translations or adaptations were associated with Dara Shikoh (during Shahjahan's reign), the specific translation by Nizamuddin Panipati is linked to Akbar's era. 5. Therefore, the translation occurred during the reign of Akbar.