Yes indeed.. this is an interesting topic. I've found this
article which I found explains quite well:
http://www.ymba.org/BWF/bwf72.htm
47) Buddha Recitation -- Essence and Practice
There are two aspects to Buddha Recitation -- essence and practice.
According to Elder Master Ou-I:
"Buddha Recitation-practice" means believing that there is a
Western Pure Land and a Lord Buddha named Amitabha, but not yet
realizing that "this Mind makes Buddha, this Mind is Buddha." It
consists of resolutely seeking rebirth in the Pure Land and
reciting as earnestly as a lost child longing for his mother, never
forgetting her for a single moment.
"Buddha Recitation-essence," on the other hand, means believing and
understanding that Lord Amitabha Buddha of the West inherently
exists in full within our mind, is created by our mind, and making
this sacred name -- inherently existing in full within our mind and
created by our mind -- the focus of our recitation, without a
moment of neglect."
In other words, "Buddha Recitation-practice" is the method of those
who do not understand anything about meaning or essence, who just
believe that there is a Land of Ultimate Bliss and a Buddha named
Amitabha, and who fervently and earnestly recite the Buddha's name
seeking rebirth there.
"Buddha Recitation-essence" is the method of those who practice in
an identical manner, but who also deeply realize that the Pure Land
and Lord Amitabha Buddha are all in the True Mind, manifested by
the pure virtues of the True Mind.
This being so, is there a difference between Buddha
Recitation-practice and Buddha Recitation-essence? Of course there
is. Those who follow Buddha Recitation-practice see Amitabha Buddha
as outside the Mind; therefore, opposing marks of subject-object
still exist. Thus, such practice is not yet all-encompassing and
complete. Those
who practice Buddha Recitation-essence thoroughly understand the
True Mind and therefore sever all marks of subject-object -- to
recite is Buddha, to recite is Mind, reconciling Mind and
Realm.[62]
Let me relate an anecdote. One night, a Master who is a friend of
this author dreamed that a yellow-robed monk came to ask him, "You
practice Buddha Recitation, but what is Buddha?" Answer "Buddha is
Mind." The monk continued, "How about explaining to me what you
mean by Buddha is Mind?" In his dream, the author's friend
improvised the following stanzas:
Each utterance of the Buddha's
name following the rosary is Mind,
Buddha is clearly Mind, why waste time searching for Him?
The Buddha's sea of wisdom reconciles Mind and Realm!
Mind and Buddha are born equal.
To abandon Mind and follow the Buddha is to be still in a
dream,
To be attached to the Buddha as Mind is not yet perfect
comprehension;
Mind and Buddha are both originally illusory and dreamlike,
To transcend both Buddha and Mind is to arrive at the perfect City
of Lights.
The Master understood the essence of Buddha Recitation, reconciling
the Buddha's name with the realm of the Mind.
There is one erroneous idea, prevalent among those who lean toward
the subtle and the mysterious, which requires clarification. Many
of them, emphasizing theory over practice, tend to be attached to
the concept of "Amitabha as the Self-Nature, Pure Land as
Mind-Only," and reject the existence of the Western Pure Land or
rebirth there. These individuals explain the sutra teachings on
Pure Land from the viewpoint of principle or essence, saying
"Amitabha is our Buddha Nature, the Pure Land is the pure realm of
the Mind, why seek it on the outside?" This is the great mistake of
those who emphasize mundane, conventional reasoning.
They cling to theory (essence) while neglecting practice, prefer
essence to marks, and rely on Ultimate Truth to reject the
manifestations of mundane truth -- failing to realize that the two
are inseparable.[63]
According to the Treatise on the Awakening of the Faith, the True
Mind has two aspects: essence and marks. The aspect of essence is
called the Door of True Thusness, the aspect of marks is the Door
of Birth and Death. True Thusness is inseparable from Birth and
Death; Birth and Death are True Thusness. This is why the Patriarch
Asvaghosha called True Thusness the "truth-like Emptiness treasury"
and Birth and Death the "truth-like Non-Emptiness treasury." True
Thusness and Birth and death have the same truth-like nature.
Take the great ocean as an example. We cannot accept sea water but
not waves. If we were to do so, we would be wrong about the
manifestations of the ocean and fail to understand truly what the
ocean is. Therefore, when we abandon phenomena, noumenon cannot
stand by itself; when we reject marks, essence cannot remain
stable.
A great many individuals, educated in mundane ways, become
afflicted with the disease of grasping at the "Truth of Emptiness"
when they study Mahayana sutras, particularly those that expound
the Prajna Paramita truth, which they do not fully understand.
Thus, they explain sutras which elucidate phenomena and marks, such
as the Pure Land Sutras or the Ksitigarbha (Earth Store
Bodhisattva) Sutra, from the viewpoint of noumenon and principle.
They mistake these "marks" sutras as expedients to guide those of
limited capacities. However, in truth, they are the mistaken ones!
In this connection, I will quote a few passages from the sutras, to
destroy this attachment to Emptiness.
As stated in the Heart Sutra:
There is no wisdom, and there is
no attainment whatsoever. Because there is nothing to be attained,
a Bodhisattva relying on Prajnaparamita has no obstruction in his
mind. Because there is no obstruction he has no fear, and he passes
far beyond all confused imaginations and reaches ultimate Nirvana.
The Buddhas in the past, present and future, also, by relying on
the Prajnaparamita, "have" attained Supreme Enlightenment. (Sutra
Translation Committee of the United States and Canada, The Buddhist
Liturgy p. 47)
At first, Buddha Sakyamuni, in accord with Ultimate Truth, said
"there is no attainment whatsoever." Then, in accord with
conventional truth, He said "the Buddhas in the past, present and
future have attained Supreme Enlightenment." Seeing "attainment" is
attachment to existence. Seeing "non-attainment" is to err in the
direction of attachment to emptiness. Therefore, cultivators should
thoroughly understand the deep meaning behind the sutras and enter
the Middle Way.
In the Diamond Sutra, Sakyamuni Buddha stated:
Who sees Me by form,
Who seeks Me in sound,
Perverted are his footsteps upon the Way;
For he cannot perceive the Tathagata.
(A. F. Price, tr. "The Diamond Sutra," p. 65. In The Diamond Sutra
& The Sutra of Hui Neng.)
However, the Lord Buddha then continued:
Subhuti, do not think the opposite either that when the Tathagata
attained Supreme Enlightenment it was not by means of his
possession of the thirty-two marks of physical excellence. Do not
think that. Should you think that, then when you begin the practice
of seeking to attain supreme enlightenment you would think that all
systems of phenomena and all conceptions about phenomena are to be
cut off and rejected [thus falling into nihilism]. Do not think
that. And why? Because when a disciple practices seeking to attain
supreme enlightenment, he should neither grasp after such arbitrary
conceptions of phenomena nor reject them. (Wai-tao, tr., "The
Diamond Sutra," in Goddard, ea., A Buddhist Bible, p. 103-4.)