What follows is my provisional translation (in other words, not official or authorized; see here for more) of a Tablet of ‘Abdu’l-Bahá, the original text of which has been published in Yárán-i-Pársí, p. 473 (selection no. 711). According to p. 535 of that book, this Tablet was addressed to someone named Ardishír, who was the son of a certain Rustam. Since both Ardishír and Rustam were also characters in the Shahnameh—the national epic of Iran that features many feats of bravery, courage, and other conventional qualities of manliness—‘Abdu’l-Bahá may have been drawing on that cultural tradition to redefine those qualities by aligning them, in this Dispensation, with the virtues He enumerates in this Tablet.
* * *
He is God
O son of Rustam! In this day, valor and bravery—boldness, audacity, and wisdom—consist in trustworthiness, trustworthiness; in piety, piety; in sincerity, sincerity; and in steadfastness, steadfastness.
—‘Abdu’l-Bahá
A typescript of the original Persian text of this Tablet appears below (all punctuation and short vowel marks mine).