siddhānta-sāra — mature understanding; grantha — book; kailā — compiled; daśama-ṭippanī — commentary on the Tenth Canto; kṛṣṇa-līlā — of pastimes of Lord Kṛṣṇa; rasa — of the transcendental mellows; prema — ecstatic love; yāhā haite — from which; jāni — we can understand.