Prasna Uttara Malika (A garland of questions and answers) – Adisankara
कोऽर्च्यो हि भगवदवतारः .
Indeed who is to be worshipped ? Incarnation of God
कश्च भगवान्महेशः शञ्करनारायणात्मैकः
Who is the Lord ? The Supreme Lord who is both Shankara and Narayana.
फलमपि भगवद्भक्तेः किं तल्लोकस्वरुपसाक्षात्त्वं .
And what is the result of devotion to the Lord ? The immediate relaisation of His Abode and one's own nature
Please check these: Excerpts from a discourse by our Sri Sri Muralidhara Swamiji