According to Hájí Mirza Habíbu’lláh’s narrative, He [the Báb] joined Hájí Mirza Siyyid ‘Ali, His uncle-guardian, in business when He was fifteen years old, [Islamic law specifies fifteen as the age of maturity] and shortly afterwards moved to Búshihr. Pages of commercial accounts which He kept put it beyond doubt that the Báb left Shiraz for Búshihr when He was nearly sixteen. There can be little doubt that at an early age the Báb took over the complete management of the trading-house in Búshihr.
- Hand of the Cause Balyuzi ('The Báb - The Herald of the Day of Days')
