May a student issue halakhic rulings for members of his household while in the place of his teacher?

This source-based Torah study examines the question: May a student issue halakhic rulings for members of his household while in the place of his teacher? The canonical Hebrew discussion develops the issue through the weekly Torah portion and the sources cited there, preserving the distinctions, tensions, and practical implications of the original text. This localized discovery layer does not add any new halakhic, medical, legal, scientific, historical, theological, or empirical ruling or claim beyond the canonical Hebrew source.