अन्वयः

यः who (he), शास्त्रज्ञः च wellversed in scriptures, कृतज्ञः च was grateful, पुरुषान्तरकोविद: skilled in differentiating the comparative merits of men, यथान्यायम् in accordance with justice, प्रग्रहानुग्रहयोः in reprimanding and favouring, विचक्षणः was a skilled one.

Summary

He was versed in scriptures. He was grateful (to those who did him some good) and skilled in differentiating the comparative merits of men. Fair in his judgement he dispensed justice in accordance with law by reprimanding (the delinquent) and favouring (the honest).

पदच्छेदः

शास्त्रज्ञश्	शास्त्र–ज्ञ (१.१)
च	च (अव्ययः)
कृतज्ञश्	कृतज्ञ (१.१)
च	च (अव्ययः)
पुरुषान्तरकोविदः	पुरुष–अन्तर–कोविद (१.१)
यः	यद् (१.१)
प्रग्रहानुग्रहयोर्	प्रग्रह–अनुग्रह (६.२)
यथान्यायं	यथान्यायम् (अव्ययः)
विचक्षणः	विचक्षण (१.१)

छन्दः

अनुष्टुप् [८]

छन्दोविश्लेषणम्

१	२	३	४	५	६	७	८
शा	स्त्र	ज्ञ	श्च	कृ	त	ज्ञ	श्च
पु	रु	षा	न्त	र	को	वि	दः
यः	प्र	ग्र	हा	नु	ग्र	ह	यो
र्य	था	न्या	यं	वि	च	क्ष	णः