Some Ans. Questions 2014 by -'Abdu'l-Bahá- 1 Para

Briefly, that which was mentioned earlier is the foremost proof of the Sufis, and if we were to mention all of their arguments and respond to them, it would take a very long time. However, what was said represents the most decisive proof and the clearest argument that the learned among the Sufis and the Theosophists have advanced (82:15)

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