Shiva Purana
अप्रतिष्ठा हि मनसस्त्वनवस्थितिरुच्यते ॥ अश्रद्धा भावरहिता वृत्तिर्वै योगवर्त्मनि ॥ ५ ॥
Unsteadiness is the inability to stabilise the mind. Lack of faith connotes absence of piety in the path of Yoga,
english translation
apratiSThA hi manasastvanavasthitirucyate ॥ azraddhA bhAvarahitA vRttirvai yogavartmani ॥ 5 ॥
hk transliteration by Sanscript