Mudrā-vidhāna (Lalitopākhyāna): Āvāhanī–Saṃkṣobhiṇī–Ākarṣiṇī and allied Mudrās
मध्यमे मध्यगे कृत्वा कनिष्ठाङ्गुष्टरोधिते / तर्जन्यो दण्डवत्कृत्वा मध्यमोपर्यनामिके
madhyame madhyage kṛtvā kaniṣṭhāṅguṣṭarodhite / tarjanyo daṇḍavatkṛtvā madhyamoparyanāmike
Place the middle finger in the central position, with the little finger and thumb held in restraint. Make the index finger straight like a staff, and set the middle finger upon the ring finger.