sravanam kirtanam visnoh
arcanam vandanam dasyam
iti pumsarpita visnau
bhaktis cen nava-laksana
kriyeta bhagavaty addha
tan manye 'dhitam uttamam
sravanam—hearing of the holy name, form, qualities, entourage and pastimes, all of which must pertain to Lord Visnu; kirtanam—vibrating transcendental sounds pertaining to the holy name, form, qualities and entourage, and inquiring about them (these also should be only in relationship to Visnu); visnoh—of Lord Visnu; smaranam—remembering the holy name, form and entourage, and inquiring about them, also only for Visnu; pada-sevanam—executing devotional service according to time, circumstances and situation, only in relationship with Visnu; arcanam—worshiping the Deity of Lord Krsna, Lord Ramacandra, Laksmi-Narayana or the other forms of Visnu; vandanam—offering prayers to the Supreme Personality of Godhead; dasyam—always thinking oneself an eternal servant of the Supreme Personality of Godhead; sakhyam—making friends with the Supreme Personality of Godhead; atma-nivedanam—dedicating everything (body, mind and soul) for the service of the Lord; iti—thus; pumsa—by the human being; arpita—dedicated; visnau—unto the Supreme Personality of Godhead, Visnu; bhaktih—devotional service; cet—if; nava-laksana—possessing nine different systems, as above mentioned; kriyeta—one should execute; bhagavati—unto the Supreme Personality of Godhead; addha—directly (not indirectly through karma, jnana or yoga); tat—that; manye—I understand; adhitam—studied; uttamam—first class.
" 'This process entails hearing, chanting and remembering the holy name, form, pastimes, qualities and entourage of the Lord, offering service according to the time, place and performer, worshiping the Deity, offering prayers, always considering oneself the eternal servant of Krsna, making friends with Him and dedicating everything unto Him. These nine items of devotional service, when directly offered to Krsna, constitute the highest attainment of life. This is the verdict of the revealed scriptures.'
Link to this page: https://prabhupadabooks.com/cc/madhya/9/259-260