How did Balaji's son, Abdul, continue his father's vow of selfless service after his passing?

The provided information in Chapter 35 indicates a misunderstanding in the question's premise, as Abdul is not identified as the son of Balaji Patil Nevasakar. The text describes Abdul as a separate devotee who also served Baba. Chapter 35 mentions three individuals who took on the service of sweeping Baba's paths: first Balaji Patil, then Radhakrishnabai, and later, 'Abdul moved forward in this.' Separately, the text discusses the legacy of Balaji's vows, stating that 'Even now his loving son partially continues this vow,' which specifically refers to the son sending grain to the mosque. Therefore, Abdul and Balaji's son were two different people who served Baba in their own distinct ways.