Śri Kṛṣṇa teaches His disciple Arjuna true spiritual leadership
ये हि संस्पर्शजा भोगा दुःखयोनय एव ते । आद्यन्तवन्तः कौन्तेय न तेषु रमते बुधः ॥ ५-२२॥
Bhagavadgītā V: 22
The enjoyments that stem from [the sensory] contacts [with objects] are the birthplace of suffering: such [enjoyments] begin and then they end, Son of Kunti! The one who [truly] knows, does not take pleasure in these [enjoyments].
शक्नोतीहैव यः सोढुं प्राक्शरीरविमोक्षणात् । कामक्रोधोद्भवं वेगं स युक्तः स सुखी नरः ॥ ५-२३॥
Bhagavadgītā V: 23
The person who is able to put up with the impact of [inordinate] desires and anger until the moment of death, is [truly] spiritually disciplined and happy.
योऽन्तःसुखोऽन्तरारामस्तथान्तर्ज्योतिरेव यः । स योगी ब्रह्मनिर्वाणं ब्रह्मभूतोऽधिगच्छति ॥ ५-२४॥
Bhagavadgītā V: 24
The person who is happy within, who delights within, whose light is within, such a one practices [true] spiritual discipline (yoga), and reaches the ultimate salvation (nirvāṇa) which is Brahman, because that person has become [full of] Brahman.
लभन्ते ब्रह्मनिर्वाणमृषयः क्षीणकल्मषाः । छिन्नद्वैधा यतात्मानः सर्वभूतहिते रताः ॥ ५-२५॥
Bhagavadgītā V: 25
Because their moral stains have disappeared, such [persons being like] Vedic seers reach the ultimate salvation which is Brahman. Their doubts overcome, they keep their inner nature in check, and they rejoice in the welfare of all living beings.