Upakarma is associated with the annual replacement of the yajnopaveeta, in the present day. However, in earlier days it was to be performed only by the teacher along with his students when they had reassembled at the beginning of the session (Asv. Grh. 8.4.10) and Baud Gr. Sutr. 3.1.8. Upakarma Prakarana of Apastamba Grhyasutras<ref>Apastamba Grhyasutras ([https://sa.wikisource.org/wiki/%E0%A4%86%E0%A4%AA%E0%A4%B8%E0%A5%8D%E0%A4%A4%E0%A4%AE%E0%A5%8D%E0%A4%AC%E0%A4%97%E0%A5%83%E0%A4%B9%E0%A5%8D%E0%A4%AF%E0%A4%B8%E0%A5%82%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A5%8D#%E0%A4%8F%E0%A4%95%E0%A4%BE%E0%A4%A6%E0%A4% Patala 4 Khanda 11])</ref> | Upakarma is associated with the annual replacement of the yajnopaveeta, in the present day. However, in earlier days it was to be performed only by the teacher along with his students when they had reassembled at the beginning of the session (Asv. Grh. 8.4.10) and Baud Gr. Sutr. 3.1.8. Upakarma Prakarana of Apastamba Grhyasutras<ref>Apastamba Grhyasutras ([https://sa.wikisource.org/wiki/%E0%A4%86%E0%A4%AA%E0%A4%B8%E0%A5%8D%E0%A4%A4%E0%A4%AE%E0%A5%8D%E0%A4%AC%E0%A4%97%E0%A5%83%E0%A4%B9%E0%A5%8D%E0%A4%AF%E0%A4%B8%E0%A5%82%E0%A4%A4%E0%A5%8D%E0%A4%B0%E0%A4%AE%E0%A5%8D#%E0%A4%8F%E0%A4%95%E0%A4%BE%E0%A4%A6%E0%A4% Patala 4 Khanda 11])</ref> |