त्रीणि देवाः पवित्राणि ब्राह्मणानामकल्पयन् । अदृष्टमद्भिर्निर्णिक्तं यच्च वाचा प्रशस्यते ॥ १२७ ॥
sanskrit
The gods declared three things (to be) pure to Brahmanas, that (on which) no (taint is) visible, what has been washed with water, and what has been commended (as pure) by the word (of a Brahmana).
english translation