Such an auspicious night has not come into my fate; how can I, a cheerful person, maintain my spirit? My foot-taps lose their rhythm, and my hands cannot play the sitar well.

This couplet expresses a deep regret over missed opportunities. The speaker laments that a truly beautiful or auspicious night, full of joy and potential, never came their way or wasn't meant for them. They feel unable to fully embrace or sustain happiness, comparing themselves to someone vibrant who couldn't perform when it mattered. The lines vividly describe a sense of frustration: their feet couldn't dance freely when the moment called for it, and their hands failed to play the sitar beautifully. It's a poignant reflection on how circumstances or fate can prevent us from fully expressing our joy or talent, leaving us with a feeling of unfulfilled desire.