Two Assets Of A Brahmacari: Kamandalu And Brahmacari Danda by Srila Vrindavana Das Thakura
The householders have numerous pots in order to separate purity from impurity. The sannyāsīs, however, have only one pot, a kamaṇḍalu. They are compelled to use this pot for all kinds of activities. According to the scriptures, the sannyāsīs’ pot is an alābu, or pot made from an ash gourd. Since the brahmacārī’s duty is to serve the sannyāsī, he must carry the kamaṇḍalu of his Guru. The upakurvāṇabrahmacārīs, who marry after completing their educational vow, reside in a particular āśrama in which they study under a gṛhastha teacher.
ekadaṇḍa or tridaṇḍa