Show me some beauty, O lovely face, that I may show; / For Farhad's own burden is a strange, steep hill.

This couplet is a profound declaration of overwhelming passion. The speaker, addressing the beloved, asks for a challenge worthy of display. He implies that his love is so intense that even undertaking the massive responsibility of a 'strange, deep valley' (a huge, daunting task) feels utterly trivial. For him, the mere act of captivating the beloved requires effort far greater than any worldly achievement. It is the ultimate surrender to love's power.