Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 60
Sanskrit:
युञ्जानानामभक्तानां प्राणायामादिभिर्मन: ।अक्षीणवासनं राजन् दृश्यते पुनरुत्थितम् ॥ ६० ॥
ITRANS:
yuñjānānām abhaktānāṁprāṇāyāmādibhir manaḥakṣīṇa-vāsanaṁ rājandṛśyate punar utthitam
Translation:
The minds of nondevotees who engage in such practices as prāṇāyama are not fully cleansed of material desires. Thus, O King, material desires are again seen to arise in their minds.