Rabi` al-Thani 23, 1330
We, in our Letter No. 19, had indicated that some fanatics question the derivation of your school of thought, in its roots and branches of religion, from the Imams of Ahl al-Bayt, and we wished to ask you about this matter. Now is the time to ask such a question; so, could you please answer it in a way that would refute their claim? Wassalam.