Mayamatam 6.12

6.12

meṣe ca mithunesiṃhe tulāyāṃ dvyaṅgulaṃ nayet
kulīre vṛścike matsyeśodhayeccaturaṅgulam

In Aries, Gemini, Leo, and Libra, one should offset two digits;
in Cancer, Scorpio, and Pisces, one should adjust by four digits;