CC Madhya 25.147
“satyaṁ paraṁ” — sambandha, “dhīmahi” — sādhana-prayojana
gāyatrīra arthe — with the meaning of Brahma-gāyatrī; ei — this; grantha — of the great literature; ārambhana — the beginning; satyam param — the supreme Absolute Truth; sambandha — shows a relationship; dhīmahi — we meditate (the end of the Gāyatrī mantra); sādhana-prayojana — the execution of service and the achievement of the ultimate goal.
“In the beginning of Śrīmad-Bhāgavatam there is an explanation of the Brahma-gāyatrī mantra. ‘The Absolute Truth [satyaṁ param]’ indicates the relationship, and ‘we meditate [dhīmahi] on Him’ indicates the execution of devotional service and the ultimate goal of life.