Agniveshyagrihyasutra 2.3.1.5

2.3.1.5

vrīhīnapohyāpa upaspṛśyādbhiravokṣya ? bhūrbhuvaḥsvaroṃ pratiṣṭha ityagnimupasamādhāya barhiraratnimātraṃ ṣaṭtriṃśadaṅgulaṃ tisraḥ śamyāḥ paridhayo madhyamāṅgulyānāmikayā kaniṣṭhikayeti sthaviṣṭho madhyamo 'ṇīyān dakṣiṇato 'ṇiṣṭho hrasiṣṭha uttarataḥ samiddvādaśāṅguṣṭhamaṣṭādaśa yājñikaṃ kāṣṭhaṃ prokṣaṇīmājyasthālīṃ prājāpatyabhājanaṃ prasthacaturbhāgaṃ pūrṇaprasthadvibhāgaṃ praṇītāpraṇayanaṃ prasthacarusthālīṃ vadānapramāṇamaṅguṣṭhaparvoktam āhutipramāṇaṃ caturaṅgulaṃ darvīprabhāṇamekaviṃśatimaṅguṣṭhaṃ tasyāścaturdaśāṅguṣṭhaṃ pūrvabhāgaṃ tasya dvyaṅguṣṭhamunnataṃ pañcāṅguṣṭhaṃ bilamevaṃ sruk prādeśamātraṃ pavitramevamupaveṣaṇamiti homapramāṇanirdeśo vyākhyātaḥ \\1\\

Having pushed aside the rice grains, having touched water, having sprinkled with water, having established the fire with "Bhūr bhuvaḥ svaḥ om, be established!", the sacred grass measuring an aratni, thirty-six aṅgulas [long], three wooden pins as enclosing sticks, with the middle finger, the ring finger, and the little finger: the thickest in the middle, the thinner on the south, the thinnest and shortest on the north; the fuel stick twelve thumbs [long], sacrificial wood of eighteen [thumbs], the sprinkling-water pot, the ghee pot, the vessel for Prajāpati measuring a quarter-prastha, a full two-quarter-prastha vessel for carrying forward the praṇītā water, a prastha-pot for the cooked offering, the size of a portion stated as a thumb-joint, the measure of an oblation four aṅgulas, the size of the ladle twenty-one thumbs, its forward part fourteen thumbs, its raised [rim] two thumbs, its cavity five thumbs; likewise the offering-spoon measuring a span, the strainer likewise, the poker likewise—thus the specification of measurements for the offering has been explained. || 1