त्वं चाहं च मित्रं लभावहे इत्येवं आदिध् समसंधिः ॥ कZ_०७.९.०४ ॥
tvaṃ cāhaṃ ca mitraṃ labhāvahe ityevaṃ ādiḥ samasaṃdhiḥ
‘ତୁମେ ଓ ମୁଁ—ଉଭୟେ ଗୋଟିଏ ମିତ୍ର ଲାଭ କରିବା’—ଏଭଳି ଆରମ୍ଭ ଥିବା ସନ୍ଧି ହେଉଛି ସମ (ସମତୁଳିତ) ସନ୍ଧି।
Because the stated benefit is symmetric: both parties explicitly claim the same gain (acquiring an ally), implying parity in advantage and obligation.