त्वं चाहं च मित्रं लभावहे इत्येवं आदिध् समसंधिः ॥ कZ_०७.९.०४ ॥
tvaṃ cāhaṃ ca mitraṃ labhāvahe ityevaṃ ādiḥ samasaṃdhiḥ
‘তুমি আৰু মই—উভয়ে এজন মিত্ৰ লাভ কৰোঁ’—এদৰে আৰম্ভ হোৱা সন্ধি সম (সাম্যপূর্ণ) সন্ধি।
Because the stated benefit is symmetric: both parties explicitly claim the same gain (acquiring an ally), implying parity in advantage and obligation.