कामिक आगम: पूर्व भाग (अष्टाविंशति मूल शैव आगमों का प्रथम एवं सर्वोच्च आगम महाकोश)

caturas'ram samam kurya't tribha'gaikam adhastatah।
vr'ttam u'rdhvamadhah kurya'c chika'pa'da'n nyased adhah॥ 4
vista'ram trigun.a'ya'mam vya'soccam pa'datas samam।
a'ya'mam tu yatha' s'obham tatha' kurya'd vicaks"an.ah॥ 5
The least type of measure is half or one third of the height of the roof . It is recommended
that the axis of the finial should be made of metal or wood. The width at its bottom and its
height should be equal to those of the pillar of the upper storey and it should gradually
tapper towards its top whose width should be one digit. One third of the lower portion of
the axis should be designed in the shape of square and the portion above and below this
should be circular. A structure in the shape of peacocks foot should be provided at its base. Its length should be three times its width and whose width and height should be equal to the diameter of the pillar(of the upper storey). Its length may be taken by the skilled architect in such a way as to induce elegance and pleasant appearance. अथवा तच्छिखायाम द्विगुणं कीलदैर्घ्यकम्। स्तम्भव्यासार्धविस्तारं त्रिचतुर्भाग एव वा।। ६ अग्रमर्धाङ्गलं व्यासो शिखिपादं यथासुखम्। शिखराकृतिवत्कीलं लिङ्गच्छन्दं अथापि वा।। ७ athava' tacchika'ya'ma dvigun.am ki'la dairghyakam। stambha vya'sa'rdha vista'ram tricaturbha'ga eva va'॥ 6 agram ardha'n'gulam vya'so s'ikhipa'dam yatha' sukham। s'ikhara'kr'tivat ki'lam lin'gacchandam atha'pi va'॥ 7 Or, the length of the axis may be twice that of the finial and its width may be half of the diameter of the pillar or one third or one quarter of that diameter. In that case, the diameter at the top should be half a digit and the dimensions of the peacocks foot should
be calculated so as to give the required stability. The axis of the finial may be in the shape
of a pin, nail or Linga(which is square at the base, octagonal in the middle and circular at
the top).