Homahyi Knows Her Brother's Voice

From C7.10, The Sisters Recognize Esfandiyar. It illustrates C7.10.16–27:

C7.10.16
Beneath his robe he gave a sudden shout;Both sisters shook with fear as it rang out.
C7.10.17
“May Esfandiyar die, and perish tooWhoever speaks his name, as now you do.
C7.10.18
May unjust Goshtasb also meet that end;May crown and belt no king like him attend.
C7.10.19
Do you not see I trade to earn my bread?I work to keep myself supplied and fed.”
C7.10.20
Homahyi knew his voice; the sound brought peace,And gave her anxious heart a brief release.
C7.10.21
Yet though she knew him by his voice alone,She kept that knowledge hidden and unknown.
C7.10.22
She stood before him stricken by her pain,And let her tears descend like pouring rain.
C7.10.23
Her clothes were torn, her feet were in the dust,Her soul afraid of Arjasp’s wrath unjust.
C7.10.24
The watchful prince perceived that Homahyi knew,And from beneath his veil his face he drew.
C7.10.25
His eyes were wet, his heart with blood oppressed;His sunlike face revealed his soul’s unrest.
C7.10.26
He marveled at the world’s relentless grip,And in his bitter anger bit his lip.
C7.10.27
He said, “My sisters, keep our secret sealed;For these few days, let nothing be revealed.