By what audacity did he deny the dawn of eternity to her? I do not know if that secret is yours or mine.

This profound couplet by Allama Iqbal delves into the nature of existential denial. The poet questions how someone could dare to reject something so fundamental, something that exists since the 'dawn of eternity.' He then shifts to the ambiguity of secrets, wondering if the mystery or secret (raaz-dan) belongs to the beloved or to the speaker himself. It speaks to the deep confusion that follows a profound emotional betrayal.