Direction  to the physician for investigating and discovering  the picture of disease (aphorism 84 to 99)
Should listen to the history of sufferings of the patient as narrated by him.
Should collect all information from his attendants as regard his complaints, his behavior, and any other abnormality noticed by them.
doctor should observe for himself anything abnormal about his patient
Should write down accurately all that the patient and his attendants have told him in the very expression used by them
Should keep himself silent and allow them to say all they have to say and refrain from interrupting them unless they wander of to other matters
Should advice the patient and his relatives at the beginning of examination to speak slowly, in order that he may take down in writing the important part of what they say;
Should begin fresh line with every new symptoms told by the patient and his relatives so that he can complete the symptom later on
Should revert to each symptoms after they have finished talking to make it complete by noting (a) locality (b) sensation (c) modalities (d) concomitant factors with regards to each symptoms.
Should never ask a leading question to the patient.
Should enquire about mental state of the patient, his likes and dislikes
Should ask more precise questions if he feels he has not yet gained all information he needs.  FOR EXAMPLE READ THE FOLLOWING QUESTION                                                                            

(A) at what period did this symptom occur?                                              (B) Was it previous to taking the medicine he had hitherto been using?      (C) While taking the medicine?                                                                (D) Or only some days after leaving off the medicine?                                                                                                (E) What kind of pain, what sensation exactly, was it that occurred on this spot?                                                                                                     (F) Where was the precise spot?                                                            (G) Did the pain occur in fits and by itself, at various times?                     (E) Or was it continued, without intermission?                                         (F) How long did it last?                                                                         (G) At what time of the day or night, and                                                 (H) in what position of the body was it worst, or ceased entirely?               (I) What was the exact nature of this or that event or circumstance mentioned - described in plain words?                                               TAKE STOOL FOR EXAMPLE  FOLLOWING RELATED QUESTIONS MAY BE ASKED                                                          what was the character of his stools?                                                        How does he pass his water?                                                                 How is it with his day and night sleep?                                                 What is the state of his disposition, his humor, his memory?                      How about the thirst?                                                                                            What sort of taste has he in his mouth?                                                       What kinds of food and drink are most relished?                                                                                                     What are most repugnant to him?                                                            Has each its full natural taste, or some other unusual taste?                      How does he feel after eating or drinking?                                                   Has he anything to tell about the head, the limbs or the abdomen?

Should make note of what he himself observes in the patient and ascertain how much of that was peculiar to the patient in his healthy state                                                                                                               eg (a) how the patient behaved during the visit -whether he was morose, quarrelsome, hasty, lachrymose, anxious despairing or sad or hopeful or calm.                                                                                             (b) whether he was in a drowsy state or in any way dull in comprehension                                                                              (c)  whether he spoke hoarsely or in a low tone or incoherently or how other wise he talked etc