Paṇidhānakavasena paṇidhi. Bhavaṃ netīti bhavanetti. Etāya hi sattā rajjuyā gīvāyaṃ bandhā goṇā viya icchiticchitaṭṭhānaṃ nīyanti. Taṃ taṃ ārammaṇaṃ vanati bhajati alliyatīti vanaṃ. Vanati yācatīti vā vanaṃ. Vanathoti byañjanena padaṃ vaḍḍhitaṃ. Anatthadukkhānaṃ vā samuṭṭhāpanaṭṭhena gahanaṭṭhena ca vanaṃ viyāti vanaṃ, balavataṇhāyetaṃ nāmaṃ. Gahanataraṭṭhena pana tato balavatarā vanatho nāma. Tena vuttaṃ:-

"vanaṃ chindatha mā rukkhaṃ vanato jāyate bhayaṃ

chetvā vanaṃ vanathañca nibbanā hotha bhikkhavo"ti.