Krsna never disappoints a sincere devotee, regardless of what he wants, but He never allows anything which will be detrimental to the individual's devotional service

Expressions researched:
"He never disappoints a sincere devotee, regardless of what he wants, but He never allows anything which will be detrimental to the individual's devotional service"

SB Canto 3

The Personality of Godhead knew the heart's desire of Kardama Muni, and He had already arranged for the fulfillment of his desires. He never disappoints a sincere devotee, regardless of what he wants, but He never allows anything which will be detrimental to the individual's devotional service.

SB 3.21.23, Translation and Purport:

The Supreme Lord said: Having come to know what was in your mind, I have already arranged for that for which you have worshiped Me well through your mental and sensory discipline.

The Supreme Personality of Godhead in His Paramātmā feature is situated in everyone's heart. He knows, therefore, the past, present and future of every individual person as well as his desires, activities and everything about him. It is stated in Bhagavad-gītā that He is seated in the heart as a witness. The Personality of Godhead knew the heart's desire of Kardama Muni, and He had already arranged for the fulfillment of his desires. He never disappoints a sincere devotee, regardless of what he wants, but He never allows anything which will be detrimental to the individual's devotional service.