तव your, अभिषेचनात् अन्यत्र other than consecration, कर्तव्यम् duty, न किञ्चित् nothing, मम my, अतः for that reason, अहम् I, त्वाम् to you, यत् whatever, ब्रूयाम् I shall tell you, तत् that one, त्वम् you, मे to me, कर्तुम् to perform, अर्हसि it behoves you.

There is nothing left to be done by me except your consecration Hence you should perform what I tell you.