Apastambashulbasutra 109.1

109.1

prakrameṇa pramāṇaṃ vakṣyati /
aṣṭau prakramānatītya gārhapatyādāhavanīyaṃ pratiṣṭhāpayati /
evamekādaśasu rājanyasya /
vaiśyasyadvādaśasu /
caturviṃśatyā vā parimite vā yāvātā vā cakṣuṣā manyate /
tasmānnādidūramādheyaḥ iti sarveṣāmaviśeṣeṇa śrūyate /
yāvatā veti sarveṣāṃ vidhirvikalvena /
iyatāntarālena vihārasaṃpattirbhavatīti mananam /
atidūrapratiṣedho vyavāyaparihārārthaḥ /
yadyatidūramādhīyate tadā śvādayo vyaveyuḥ /

He will state the dimension in terms of a pace. Having passed eight paces from the Gārhapatya, he establishes the Āhavanīya. Thus, at eleven for a Rājanya; at twelve for a Vaiśya; or at twenty-four, or at an unmeasured distance, or as far as he considers by sight; "Therefore it should not be established too far away"—thus it is heard in revelation for all without distinction. "Or as far as" is a rule for all by option. The consideration is: with an interval of this extent, the accomplishment of the spatial layout is achieved. The prohibition of "too far away" is for the purpose of avoiding an obstruction; if it is established too far away, then dogs and others might pass between.