Shiva Purana
पञ्चमः कथ्यते सद्भिर्न्यासः पञ्चाक्षरात्मकः ॥ एतेष्वेकमनेकं वा कुर्यात्पूजादि कर्मसु ॥ २३ ॥
The fifth is called by the saintly the five-syllabled sacrifice. One should perform one or more of these ritualistic ceremonies, such as worship.
english translation
paJcamaH kathyate sadbhirnyAsaH paJcAkSarAtmakaH ॥ eteSvekamanekaM vA kuryAtpUjAdi karmasu ॥ 23 ॥
hk transliteration by Sanscript