غزل کا پہلا شعر جو ردیف قافیہ کی پابندی کرتا ہے کیا کہلاتا ہے؟

In Urdu poetry, the first couplet (sher) of a ghazal is specifically called مطلع. It establishes the rhyme and meter for the entire ghazal. مقطع is the concluding couplet, while مقدمہ and نقیب are unrelated terms in this context.