Rigveda 10.42.2

दोहे॑न॒ गामुप॑ शिक्षा॒ सखा॑यं॒ प्र बो॑धय जरितर्जा॒रमिन्द्र॑म् ।कोशं॒ न पू॒र्णं वसु॑ना॒ न्यृ॑ष्ट॒मा च्या॑वय मघ॒देया॑य॒ शूर॑म्॥

dohena gāmupa śikṣā sakhāyaṃ pra bodhaya jaritarjāramindram |kośaṃ na pūrṇaṃ vasunā nyṛṣṭamā cyāvaya maghadeyāya śūram ||

Our plain-language meaning of this verse is waiting for scholar review.