Arthashastra
आचार्या विद्यावन्तश् च पूजा वेतनानि यथा अर्हं लभेरन् पञ्च शत अवरं सहस्र परम् ॥
teachers, and learned men shall have honorarium ranging from 500 to 1,000 (panas) according to their merit.
english translation
AcAryA vidyAvantaz ca pUjA vetanAni yathA arhaM labheran paJca zata avaraM sahasra param ॥
hk transliteration by Sanscript