Destruction of both good and evil thoughts, perseverance, concentration, decision, and ascertainment of all things depending upon direct evidence, form the five properties of the understanding.
इष्टानिष्टविपत्तिश्च व्यवसाय: समाधिता। संशयः प्रतिपत्तिश्च बुद्धेः पञ्चगुणान् विदुः।१०।।