One verse

Srimad Bhagavatam 7.7.30-31

7.7.30-31

गुरुशुश्रूषया भक्त्या सर्वलब्धार्पणेन च । सङ्गेन साधुभक्तानामीश्वराराधनेन च ॥ ३० ॥ श्रद्धया तत्कथायां च कीर्तनैर्गुणकर्मणाम् । तत्पादाम्बुरुहध्यानात तल्लिङ्गेक्षार्हणादिभि: ॥ ३१ ॥

guru-susrusaya bhaktya sarva-labdharpanena ca sangena sadhu-bhaktanam isvararadhanena ca sraddhaya tat-kathayam ca kirtanair guna-karmanam tat-padamburuha-dhyanat tal-lingeksarhanadibhih

guru-susrusaya
by rendering service to the bona fide spiritual master
bhaktya
with faith and devotion
sarva
all
labdha
of material gains
arpanena
by offering (to the guru, or to Krsna through the spiritual master)
ca
and
sangena
by the association
sadhu-bhaktanam
of devotees and saintly persons
isvara
of the Supreme Personality of Godhead
aradhanena
by the worship
ca
and
sraddhaya
with great faith
tat-kathayam
in discourses about the Lord
ca
and
kirtanaih
by glorifications
guna-karmanam
of the transcendental qualities and activities of the Lord
tat
His
pada-amburuha
on the lotus feet
dhyanat
by meditation
tat
His
linga
forms (Deities)
iksa
observing
arhana-adibhih
and by worshiping

One must accept the bona fide spiritual master and render service unto him with great devotion and faith. Whatever one has in one’s possession should be offered to the spiritual master, and in the association of saintly persons and devotees one should worship the Lord, hear the glories of the Lord with faith, glorify the transcendental qualities and activities of the Lord, always meditate on the Lord’s lotus feet, and worship the Deity of the Lord strictly according to the injunctions of the sastra and guru.