यदा चतुष्कलो योगस्तदा त्वेष विधिः स्मृतः । निष्क्रमश्च प्रवेशश्च द्विकले परिकीर्तितौ ॥ ३५॥
When the combination consists of four Kalās, this is said to be the proper method. The Niṣkrāma and the Praveśa together are said to constitute two Kalās.
english translation