Dear KR Subramaniam ji, This is the Shloka which was mentioned by Vasuchak Ji in his post. Its from the Bhagavad Gita: ye 'py anya-devatā-bhaktāyajante śraddhayānvitāḥte 'pi māmevakaunteyayajanty avidhi-pūrvakam SYNONYMSye — those who; api — also; anya — of other; devatā — gods; bhaktāḥ — devotees; yajante — worship; śraddhayāanvitāḥ — with faith; te — they; api — also; mām — Me; eva — only; kaunteya — O son of Kuntī; yajanti — they worship; avidhi-pūrvakam — ina wrong way. TRANSLATIONThose who are devotees of other gods and who worship them with faith actually worship only Me, O son of Kuntī, but they do so in a wrong way. Bhagavad-gita As It Is Chapter 9 Verse 23