Srimad Bhagavatam

References to text SB 1.2.7
SB 1.2.7: By rendering devotional service unto the Personality of Godhead, Śrī Kṛṣṇa, one immediately acquires causeless knowledge and detachment from the world.

Text
“ ‘You should know Kṛṣṇa to be the original soul of all ātmās [living entities]. For the benefit of the whole universe, He has, out of His causeless mercy, appeared as an ordinary human being. He has done this by the strength of His own internal potency.’
Lord Sri Caitanya Mahaprabhu Instructs Sanatana Gosvami in the Science of the Absolute Truth
CC 2.20.162