Master Shan-tao said:
"Abandon the
teachings that Amida Buddha abandoned, observe the practice that Amida Buddha
observed, and leave the practices that Amida Buddha left. This is said to be
'in accordance with the teaching of Amida Buddha' and 'in compliance with the
intent of Amida Buddha'. Such a person is referred to as the 'true disciple of
Amida Buddha'". [1]
This passage means that we must abandon everything which is not mentioned in the Primal Vow of Amida Buddha, where only faith, saying of the Name in faith and wish for birth in the Pure Land are taught. If you do this, you are in accord with Amida's Primal Vow and you are His true disciple. Any practice or teaching which are not mentioned in the Primal Vow, like various meditation methods, mantras or anything else, should NOT be followed because they do not lead to birth in the true fulfilled land of the Pure Land[2]. This does NOT mean those practices are bad! On the contrary, if they were taught by Shakyamuni Buddha they are all perfect and good in themselves, but I repeat, they are not practices leading to the Pure Land of Amida Buddha because they were not mentioned in His Primal Vow. This is the only reason we should not follow them. Mixing the various Dharma gates is wrong and not useful at the level we are now as unenlightened beings.