Mirza Ghalib is a great poet. Ghalib handles all the technical elements of narration and innovation in his speech with perfect artistry and skill. Ghalib's interest in the matter of the proverbial industry has received special attention. This paper contains a linguistic analysis of Mirza Ghalib's idiomatic grasp. In this paper, the various uses of idioms in Mirza Ghalib's speech have been highlighted, and by analysing these idioms linguistically, it has been tried to clarify that the use of idioms in the tradition of classical ghazal is very healthy and balanced. The system of idioms in Ghalib's speech has been seen from a linguistic point of view. Also, a glossary of idioms used in Ghalib's Diwan and idioms devised by Ghalib has been arranged, which is a new addition to the art of idioms.