Lord Nityananda is the eternal associate of Chaitanya Mahaprabhu, the Supreme Personality of Godhead. Mahaprabhu cannot be approached or understood without the mercy of Nityananda Prabhu, who is the cardinal guru of all the universes and serves as an intermediary between Mahaprabhu and His devotees. He is the Lord’s active principle in both creation and lila. He is the second body of the Lord, manifesting as Balaram to Sri Krishna, Lakshman to Sri Ram and Nityananda Prabhu to Caitanya Mahaprabhu.
Nityananda Prabhu in His role as the original spiritual master was instrumental in spreading the Yuga-Dharma of Sankritana all over the Gaudadesh (Bengal, Orrisa). His mercy knew no bounds, and people fortunate to come in contact with Him were inundated with the love of Godhead. It was by His mercy that Raghunatha dasa, one of the six Goswamis started the famous DandaMahotsava festival of Panihatti, a tradition that continues to this day, and was thus able to serve Caitanya Mahaprabhu. He extended His mercy to even fallen souls like Jagai and Madhai, delivering them from the sinful lives and protecting them from the wrath of even Caitanya Mahaprabhu
Srila Prabhupada on Lord Nityananda
Kavi Karnapura describes in his Sri Gaur Ganodesa Dipika about Lord Nityananda, “Lord Nityananda Avadhuta is actually the Personality of Godhead Lord Balarama. Always staying among the devotees, He shines with the splendor of thousands of suns. Lord Nityananda incarnates as His plenary expansion as Ananta Sesa. As Lord Sesa, He transforms His body to become the garments, bracelets, and other ornaments worn by Lord Visnu and Lord Krishna. Expanding again as the pastime potency, lila-sakti, Lord Sesa is aware of all the details of Lord Krishna’s confidential pastimes.”
At ISKCON, Mysore on the day of Nityananda Trayodashi, devotees fast till noon and pray to Lord Nityananda for spiritual strength. Evening program begins with a grand abhishekam to The Deities of Sri Sri Gaura Nitai with panchamrita (milk, curd, sweetened water, ghee and honey) and panchagavya. The Deities are then bathed with exotic fruit juices and water mixed with herbal extracts. The sarvaushadhi snana is followed by 64 kalasha snana and concludes with pushpa-vrishti After the abhishekam, the Deities are given a special offering of 28 food items. This is followed by Video Presentation depicting the pastimes and life of Nityananda Prabhu.
You can offer the following sevas on the occasion of Sri Nityananda Trayodashi