Mirza Badi‘u’llah was a very learned man - Edward Browne

In the year 1890, ... Mr Browne arrived in ‘Akka. Ghusn-i Akbar (the Great Branch, Mirza Muhammad-‘Ali) had gone to India for publication of some holy texts. Ghusn-i A‘zam (the Most Great Branch, ‘Abdu’l-Baha) was residing in ‘Akka. This writer [Mirza Badi‘u’llah] ... was hosting this dear guest [Browne] ... He was a very learned man. He spoke eloquently well in the sweet Persian language ...

(Baha’u’llah’s Bishárát (Glad-Tidings): A Proclamation to Scholars and Statesmen, Presented By Christopher Buck & Nahzy Abadi Buck at Grand Canyon Bahá’í Conference, Dec. 24, 2012.)

https://bahai-library.com/pdf/b/buck_tablet_glad-tidings_grand-canyon.pdf