महोपकारमुच्छुल्कं कुर्याद्बीजं च दुर्लभम् ॥ कZ_०२.२१.३१च्द् ॥
mahopakāram ucchulkaṃ kuryād bījaṃ ca durlabham
He should grant duty-free status to goods/services that confer great public benefit, and he should also treat scarce seed as a protected/priority commodity (to be specially managed).
Use tax exemptions strategically: waive customs duties when doing so creates large public benefit (welfare, productivity, stability), rather than treating all goods uniformly.
Seed is a productivity multiplier; when scarce, it becomes a strategic input requiring priority allocation/protection to safeguard future harvests and state revenue.