S Mahana explains the meaning of Sahan Aava-Wathu. The prayer is always addressed to Brahman, but in what sense? He prayed to Sabuna Brahman, may you be gracious and protect both of us,. Then next, Saha, Viriam, Karawahai. Let us both do, Virian means powerful or effective. Here it just means let us both have the capacity for knowledge. May Ishwara or Bhagawan bless us with the results of the study.