The charm to disarm [the heart] of the deity who presides over the game of dice. According to the dictionary, akṣahṛdaya (akshahridaya) is the secret key to, or skill of playing dice. The word akṣahṛdaya was first mentioned in course of Parvasaṃgraha Sūtra (Parvasangraha Sutra) of Mahābhārata (Mahabharata). Later on, in Vanaparva, Sage Vṛhadaśva (Vrihadashwa) narrated the tale of Nala and Damayantī (Damayanti) to Yudhiṣṭhira (Yudhishthira) who had been exiled to the forests. King Nala acquired the skills required to play dice, or akṣahṛdaya, from King Ṛtuparṇa (Rituparna) of the Ikṣvāku (Ikshvaku) dynasty. After chronicling the account of Nala, Vṛhadaśva himself imparted the knowledge of akṣahṛidaya to Yudhiṣṭhira—
tato’kṣahṛdayaṃ prādāt pāṇḍavāya mahātmane.