叮咛

叮咛	dīng níng	to warn / to urge / to exhort / to give instructions carefully and insistently
叮	dīng	to sting or bite (of mosquito, bee etc) / to say repeatedly / to urge insistently / to ask repeatedly / to stick to a point / (onom.) tinkling or jingling sound
咛	níng	to enjoin