This is verse of Ghalib’s 17th Ghazal
Moj-e-sarab-e-dasht-e-vafa ka na pooch haal
Do not get me started on dunes of love mirage
Har zarra, misl-e-johar-e-tegh, aab-dar tha
Every grain of its sand was like a spirited, sharp sward
sarab=mirage dasht=desert vafa=faithfulness (to love) Zarra=grain, particle misl=like johar=sharpness, mettle, shine tegh=sward aab-dar=sharpened, quenched
Meaning 4th verse: My friend! Do not ask me about the wilderness of love and its mirage. Devotion to love is a mirage that attracts thirsty with its illusion of water and greenery; then kills him of thirst and exhaustion. Know this much: every grain of sand dune of this mirage is like a spirited sward. If so, how could someone putting foot in wilderness of love, save himself. It will ultimately take toll of his life
Finer aspects of this verse: Ghalib has likened sand dunes with waves in ocean, which is unique. Words wave, mirage, quenching, and aab-dar, all have connection with water, a terrific selection of words.