Mahabharata 1.206.24

उलूप्युवाचजानाम्यहं पाण्डवेय यथा चरसि मेदिनीम्यथा च ते ब्रह्मचर्यमिदमादिष्टवान्गुरुः

ulūpyuvācajānāmyahaṃ pāṇḍaveya yathā carasi medinīmyathā ca te brahmacaryamidamādiṣṭavānguruḥ

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