Caitanya-caritāmṛta 25.143-144
artho ’yaṁ brahma-sūtrāṇāṁ bhāratārtha-vinirṇayaḥ gāyatrī-bhāṣya-rūpo ’sau vedārtha-paribṛṁhitaḥpurāṇānāṁ sāma-rūpaḥ sākṣād-bhagavatoditaḥ dvādaśa-skandha-yukto ’yaṁ śata-viccheda-saṁyutaḥ grantho ’ṣṭādaśa-sāhasraḥ śrīmad-bhāgavatābhidhaḥ
[artho ’yam brahma-sootraanaam bhaarataartha-vinirnayah gaayatree-bhaashya-roopo ’sau vedaartha-paribrimhitahpuraanaanaam saama-roopah saakshaad-bhagavatoditah dvaadasha-skandha-yukto ’yam shata-vichcheda-samyutah grantho ’shtaadasha-saahasrah shreemad-bhaagavataabhidhah]
Blended reading (Sanskrit + English inline)
artho ’yaṁ brahma-sūtrāṇāṁ bhāratārtha-vinirṇayaḥ gāyatrī-bhāṣya-rūpo ’sau vedārtha-paribṛṁhitaḥpurāṇānāṁ sāma-rūpaḥ sākṣād-bhagavatoditaḥ dvādaśa-skandha-yukto ’yaṁ śata-viccheda-saṁyutaḥ grantho ’ṣṭādaśa-sāhasraḥ śrīmad-bhāgavatābhidhaḥ
“ ‘The meaning of the Vedānta-sūtra is present in Śrīmad-Bhāgavatam. The full purport of the Mahābhārata is also there. The commentary of the Brahma-gāyatrī is also there and fully expanded with all Vedic knowledge. Śrīmad-Bhāgavatam is the supreme Purāṇa, and it was compiled by the Supreme Personality of Godhead in His incarnation as Vyāsadeva. There are twelve cantos, 335 chapters and eighteen thousand verses.’
Purport
This is a quotation from the Garuḍa Purāṇa.
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io