Bhakti-rasāmṛta-sindhu .2.150
yathā pādme—
[yathaa paadme—]
kṛṣṇāya nama ity eṣa mantraḥ sarvārtha-sādhakaḥ |
[krishnaaya nama ity esha mantrah sarvaartha-saadhakah |]
bhaktānāṁ japatāṁ bhūpa svarga-mokṣa-phala-pradaḥ ||150||
[bhaktaanaam japataam bhoopa svarga-moksha-phala-pradah ||150||]
Blended reading (Sanskrit + English inline)
yathā pādme—
kṛṣṇāya nama ity eṣa mantraḥ sarvārtha-sādhakaḥ |
bhaktānāṁ japatāṁ bhūpa svarga-mokṣa-phala-pradaḥ ||150||
Padma Purāṇa illustrates this: Chanting very softly the mantra, “kṛṣṇāya namaḥ”, produces all benefits. O king, Svarga and liberation are bestowed to the devotees who perform japa of this mantra.
Purport
In the Padma Purāṇa there is a statement: “For any person who is chanting the holy name either softly or loudly, the paths to liberation and even heavenly happiness are at once open.”
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io