तेणं कालेणं तेणं समएणं रायगिहे णयरे । गुणसिलए चेइए । सुहम्मे समोसढे। जंबू जाव पज्जुवासमाणे ।
At that time, in that period, in the city of Rajagriha, at the Gunashilak temple, Sudharmaswami was seated. Jambukumar was serving him with devoted reverence.
This opening sutra establishes the standard setting for the narration found across many scriptures in the tradition. Think of it as the timestamp and location tag at the beginning of a news report — it tells you exactly where and when this teaching was transmitted. The city of Rajagriha (modern-day Rajgir in Bihar, India) was one of the most important centers of spiritual learning in ancient India, and multiple major religious traditions trace important events to this very city. The Gunashilak temple was not just a place of worship but a gathering hall where the chief disciple would teach the assembled monks who had come to listen and learn. Sudharmaswami was the fifth of Mahavira's chief disciples and, crucially, the last one alive who had heard the teachings directly from Mahavira himself. That made him the final living link in an unbroken chain of transmission. Jambukumar, his foremost student, was receiving these same teachings in a posture of humble, attentive service — seated, listening, reverently present. By naming these two figures at the very start, the text establishes a clear line of authority: this is not someone's interpretation or invention; it is the faithfully preserved teaching of the great teacher, passed from mouth to ear across generations. This frame sets the tone and establishes the credibility for the entire narrative that follows. Whenever a Jain scripture opens with this formula, it is signaling: "What you are about to hear was witnessed, preserved, and transmitted intact."
The simple version: The story begins at a temple in Rajagriha where a great monk named Sudharmaswami is teaching his student Jambukumar.