अरत्निरिन्द्रकीलः ॥ कZ_०२.३.२६ ॥
aratnirindrakīlaḥ
ইন্দ্রকীল (খুঁটি/লকিং পিন) এক অরত্নি (এক বাহুর দৈর্ঘ্য) পরিমাপের হবে।
It prevents under-building (cost-cutting that weakens security/stability) and makes compliance measurable during inspection.