In the Nārada-pañcarātra pure, unalloyed devotional service is explained as being without any motive for personal benefit. If a devotee is continuously in love with Lord Kṛṣṇa and his mind is always fixed upon Him, that devotional attitude will prove to be the only means of attracting the attention of the Lord. In other words, a Vaiṣṇava who is incessantly thinking of the form of Lord Kṛṣṇa is to be known as a pure Vaiṣṇava.
Generally, a devotee who has achieved the causeless mercy of the Lord on account of following the strict rules and regulations of devotional service becomes attracted by the supreme greatness of the Lord, by the transcendental beauty of the Lord and by the spontaneous execution of devotional service. To be more clear, by executing the regulative principles of devotional service one can fully appreciate the transcendental beauty of the Lord. In any case, such exalted positions are possible only by the extraordinary mercy of the Lord upon the devotee.