Mullá Muḥammad-i-Zarandí, Nabíl-i-A`ẓam, lays particular stress on the Báb's strict regard for His devotions on Fridays. Even the torrid conditions of Bú[_sh_]ihr, he states, did not deter the Báb. Writers of such histories as the _Nási[_kh_]u't-Tavárí[_kh_]_,[7] hostile to the Báb, have alleged that long exposure to the severe heat of the sun in that seaport, while engaged in prayers, affected His mind. They have gone on to assert that it was this derangement of mind which led Him to make extravagant claims. But Ḥájí Mírzá Jání of Ká[_sh_]án refutes any suggestion that the Báb deliberately practised austerities, or that He found Himself a 'mur[_sh_]id' (spiritual guide) to direct Him along such lines. Unfortunately records of the years that the Báb spent in Bú[_sh_]ihr are scant. We cannot be certain as to the exact dates when He took over the complete management of the trading-house and when He retired. Ḥájí Mu`ínu's-Salṭanih of Tabríz states in his chronicle that the Báb assumed direct responsibility at the age of twenty. If that statement be correct, the period during which He acted on His own was quite brief. According to Mírzá Abu'l-Faḍl of Gulpáygán, He journeyed to the holy cities of `Iráq in the spring of 1841, stayed in `Iráq for nearly seven months and returned to His 'native province of Fárs' in the autumn of that year. Ḥájí Mírzá Ḥabíbu'lláh states that the Báb's sojourn in Bú[_sh_]ihr lasted six years. According to him, when the Báb decided to go on pilgrimage to the holy cities of `Iráq, He wrote to His uncles in [_Sh_]íráz asking them to come and take over the business from Him. His uncles, however, procrastinated, whereupon the Báb settled all the outstanding matters in Bú[_sh_]ihr Himself, brought His books up to date, locked and sealed the door of the office and left the keys with the gatekeeper of the caravanserai, to be handed over to any one of His uncles. He informed His uncles of what He had done and explained that since they had not heeded His repeated pleas He had no other alternative, determined as He was to go on pilgrimage to the holy cities.[AM] Ḥájí Mírzá Siyyid Muḥammad was greatly perturbed lest their credit be damaged and their clients suffer serious loss. But Ḥájí Mírzá Siyyid `Alí assured him that their nephew would never do anything to compromise them and that all accounts would be found in perfect order. Ḥájí Mírzá Siyyid Muḥammad hurried to Bú[_sh_]ihr where a close inspection of the books satisfied him that nothing had been left to chance.