Matsya Purana 264.40

264.40

tāvat pralambayedvidvān yāvadbhāgacatuṣṭayam.
bhrāmyate pañcabhāgordhvaṃ kārayetsaṅgamantataḥ .. 264.39

In the Jaisṭha Phallus, the lowermost line should be of the dimension of one Yava, the middle one is to be finer still—37 Then eight divisions should be made and three of them should be discarded Then seven lines should be drawn on either side and four divisions are to be noted Afterwards the lines should be allowed to meet at the top of the fifth line This is the union of the lines, on the back of these lines, two divisions are to be made These are, in brief, the Laksanas (characteristics) Thus the Laksanoddhâra of the Lingam is described.—38 40