Four Cases When the Teaching Should Be Granted. According to Pawo Tsuklak Trengwa, {Dpa' bo chos 'byung} pp. 223 4 which quotes the Biography of Vairochana, they are that the texts, commentaries and esoteric instructions should be given to one who is faithful, gentle, long tempered, and steadfast, teaching should be given completely and openly to a recipient who is noble and of long standing, teaching should be given and entrusted earnestly to the faithful who request it, and teaching should be given with enthusiasm to those of faith who have little discriminative awareness.