Shiva Purana
तामसं राजसं वापि सात्त्विकं भावमेव च ॥ आश्रित्य भक्त्या पूजाद्यं कुर्वन्भद्रं समश्नुते ॥ ६१ ॥
Whether the attitude is Sāttvic, Rājasic or Tāmasic one performing worship etc. with devotion attains welfare.
english translation
tAmasaM rAjasaM vApi sAttvikaM bhAvameva ca ॥ Azritya bhaktyA pUjAdyaM kurvanbhadraM samaznute ॥ 61 ॥
hk transliteration by Sanscript