Sutra:
247. vAcikakAyikangaLum idhukku abEkshithangaLAy irukkac seydhEyum 'njAnAn mOksham'AgaiyAlE mAnaSamAna anushtAnaththaic sollugiRadhu.

Sri PBA Swami's Sarartha Deepikai:
For the completion of the acceptance, the approach has to be with mind, speech and body as said in "sinthaiyinAlum sollAlum seygaiyinAlum". Therefore for the acceptance to work, all three would be required. However, as said in "njAnAn mOksha:", the acceptance talked about here is that done through the mind.