Therefore, to enable people to reach the stage of activities that are not tinged by fruitive results, great saints first engage people in fruitive activities, for unless one begins by performing activities as recommended in the śāstras, one cannot reach the stage of liberation, or activities that produce no reactions.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
अथाग्रे ऋषयः कर्माणीहन्तेऽकर्महेतवे । ईहमानो हि पुरुषः प्रायोऽनीहां प्रपद्यते
athāgre ṛṣayaḥ karmāṇīhante'karmahetave | īhamāno hi puruṣaḥ prāyo'nīhāṃ prapadyate
SB 8.1.14