The texts state that Sai Baba, being one with Brahman, was beyond auspicious timings. Why then did he perform a worldly act like giving charity just before his passing?

While the narrative in Chapter 42 explains that Sai Baba was beyond concepts like auspicious moments for departure because he was Brahman itself with no 'coming or going,' his final actions were a lesson for his devotees. By using the pretext of a fever and imitating worldly ways, he made his departure relatable. His final, conscious act was to give charity to Laxmibai Shinde. As Chapter 42 describes, 'knowing it to be the time for charity,' he performed this act a moment before his breaths departed. This can be understood as his final teaching through action. Though he was beyond the bondage of merit or sin, he performed this virtuous act to set an example and to permanently impress upon his followers the supreme importance of charity and selflessness in a spiritual life.