grimy

thickly covered with ingrained dirt or soot; "a miners begrimed face"; "dingy linen"; "grimy hands"; "grubby little fingers"; "a grungy kitchen"

तो, हमें जमीन में गिरा हुआ वो गन्दा-मैला सिक्का मिलता

The prosecution version of story as narrated on the basis of investigation carried out by the Investigating Officer, depicts sordid and grimy picture.