The Rise of Soma-vaṁśa: Budha’s Birth and Purūravā–Urvaśī; The Origin of Karma-kāṇḍa in Tretā-yuga
संवत्सरान्ते हि भवानेकरात्रं मयेश्वर: । रंस्यत्यपत्यानि च ते भविष्यन्त्यपराणि भो: ॥ ३९ ॥
saṁvatsarānte hi bhavān eka-rātraṁ mayeśvaraḥ raṁsyaty apatyāni ca te bhaviṣyanty aparāṇi bhoḥ
O my dear King, you will be able to enjoy with me as my husband at the end of every year, for one night only. In this way you will have other children, one after another.
Although Urvaśī had adversely explained the nature of woman, Mahārāja Purūravā was very much attached to her, and therefore she wanted to give the King some concession by agreeing to be his wife for one night at the end of each year.
It states that after one year, Urvashi tells Pururava he will be with her for one night, and that he will have offspring—additional children will also be born to him.
In the Pururava–Urvashi narrative, Urvashi sets the terms of their relationship and foretells the result—progeny—while indicating the limited nature of their meeting.
It highlights how worldly relationships and pleasures can be time-bound and conditional, encouraging discernment and a shift toward lasting spiritual purpose.