Sādhana-siddha—one who has attained perfection by executing the rules and regulations of devotional service.Prabhupada ›Glossary›-S-›Sadhana-siddha-one who has Sadhana-siddha-one who has attained perfection by executing the rules and regulations of devotional service. Link to this page: https://prabhupadabooks.com/glossary/s/sadhana-siddha-one-who-has-attained-perfection-by-executing- Previous: Sadhana-bhakti-following the rules and regulations of devotional service to develop natural love for Krsna. Next: Sadhana-the beginning phase of devotional service, consisting of regulated practice.