Patanjali, explained by Swami Vivekananda
प्रत्ययस्य परचित्तज्ञानम् ॥
pratyayasya paracittajñānam
By making Samyama on the signs in another's body, knowledge of his mind comes.
In plain words: By focusing deeply on the signs and features of another person's body, a yogi comes to know what kind of mind that person has.
Each man has particular signs on his body, which differentiate him from others; when the Yogi makes a Samyama on these signs he knows the nature of the mind of that person.
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