पुत्रयोरपि यो जात्यं प्राज्ञं शूरं कृतास्त्रमेकपुत्रं वा ददाति सोऽतिसंधीयते ॥ कZ_०७.१७.१८ ॥
putrayorapi yo jātyaṃ prājñaṃ śūraṃ kṛtāstram ekaputraṃ vā dadāti so'tisaṃdhīyate
Even between two “sons” (agents), whoever hands over (entrusts/sends) a well-born one, or a wise one, or a brave one, or a trained-in-arms one, or an only son becomes liable to be outwitted.
Do not assume that sending your ‘best’ operative (high-status, smart, brave, trained, or sole trusted person) is automatically optimal; such a choice can be anticipated, targeted, bribed, or trapped, creating vulnerability.