Shukla Yajurveda (Madhyandina) 34.6
सु॒षा॒र॒थिरश्वा॑निव॒ यन्म॑नु॒ष्या॒न्नेनी॒यते॒ऽभीशु॑भिर्वा॒जिन॑ इव ।
हृ॒त्प्रति॑ष्ठं॒ यद॑जि॒रं जवि॑ष्ठं॒ तन्मे॒ मन॑ः शि॒वस॑ङ्कल्पमस्तु ॥६॥
Susharathirashvaniva yanmanushyanneniyatebhishubhirvajina iva
Hritpratishtham yadajiram javishtham tanme manah shivasankalpamastu