Mahabharata 14.60.35

उत्तरां त्वमवेक्षस्व गर्भिणीं मा शुचः शुभेपुत्रमेषा हि तस्याशु जनयिष्यति भामिनी

uttarāṃ tvamavekṣasva garbhiṇīṃ mā śucaḥ śubheputrameṣā hi tasyāśu janayiṣyati bhāminī

Our plain-language meaning of this verse is waiting for scholar review.