I have heard Áqáy-i-Kalím, the brother of Bahá’u’lláh, describe in the following terms his meeting with Quddús in Tihrán:
“The charm of his person, his extreme affability, combined with a dignity of bearing, appealed to even the most careless observer. Whoever was intimately associated with him was seized with an insatiable admiration for the charm of that youth. We watched him one day perform his ablutions, and were struck by the gracefulness which distinguished him from the rest of the worshippers in the performance of so ordinary a rite. He seemed, in our eyes, to be the very incarnation of purity and grace.”
(Chapter 9, ‘The Dawn-Breakers’)