Mahabharata 4.20.13

मादीर्घं क्षम कालं त्वं मासमध्यर्धसंमितम्पूर्णे त्रयोदशे वर्षे राज्ञो राज्ञी भविष्यसि

mādīrghaṃ kṣama kālaṃ tvaṃ māsamadhyardhasaṃmitampūrṇe trayodaśe varṣe rājño rājñī bhaviṣyasi

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