1.1.35 अन्तरं बहिर्योगोपसंव्यानयो:

उपसंव्यान (अधोवस्त्र​) are the garments that are worn below the waist. The rule states that उपसंव्यानs and words that express a peripheral sense also have सर्वनाम​ status (by exception).