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

vams'asu'tra sira'san'ga'c chu'lamityabhidhi'yate /
maha's'u'lam catus"pra'n.am trigun.am ca'nus'u'lakam // 15
The intersection of vams'a su'tra and sira' su'tra is called s'ula. The point
at which four pra'n.a su'tras meet is known as maha's'u'la. And the point
at which three pra'n.a su'tras meet is known as anus'u'la.
शुद्धं पदं तु मर्मस्याल्लाङ्गलं कोणसङ्गतम्।
चतुष्कं तु चतुस्सूत्रैष्षट्कं षट्सूत्रयोगतः।। १६
s'uddham padam tu marmasya'l la'n'galam kon.san'gatam /
catus"kam tu catussu'trais"s"at'kam s"at'su'tra yogatah // 16
The central grid known as maha'marma is called the s'uddha. All the four
corners of the man.d'ala where three lines meet are called la'n'gala. The
point at which four lines meet is known as catus"ka. The point at which
six lines meet is known as s"at'ka
अष्टकं चाष्टसूत्राणां योगेन परिकीर्तितम्।
पदस्य चाष्टमांशेन मर्ममानं प्रकीर्तितम्।। १७
as"t'akam ca's"t'a su'tr'n.a'm yogena pariki'rtitam /
padasya ca's"t'ma'ms'ena marma ma'nam praki'rtitam // 17
The marma known as as"t'aka is the point at which eight lines meet or intersect.
The thickness of the marma is one eighth part of the grid .
पदाष्ट नवदिग्भागे भगवान् सूत्रवित्स्मृतिः।
त्रिहस्त निर्मिते क्षेत्रे यवमानं तु सूत्रकम्।। १८