Natyashastra
विवधाङ्गेन तेनैव चतुरस्रकमिष्यते । सन्धिवद्वज्रतालश्च द्विधा सम्पिष्टकं स्मृतम् ॥ २८२॥
By means of that same limb of Vivadha, the Caturasraka is to be performed. The Saṃpiṣṭaka is said to be of two kinds—Sandhivat and Vajratāla.
english translation
vivadhAGgena tenaiva caturasrakamiSyate । sandhivadvajratAlazca dvidhA sampiSTakaM smRtam ॥ 282॥
hk transliteration by Sanscript