Sanskrit: साधनान्यत्र चत्वारि कथितानि मनीषिभिः । षु सत्स्वेव सन्निष्ठा यदभावे न सिध्यति 
English:  Regarding this, sages have spoken of four means of attainment, which alone being present, the devotion to Brahman succeeds, and in the absence of which, it fails.