All different types of meditation or mysticism are means for realizing Nārāyaṇa. All austerities are aimed at achieving Nārāyaṇa. Culture of transcendental knowledge is for getting a glimpse of Nārāyaṇa, and ultimately salvation is entering the kingdom of Nārāyaṇa.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नारायणपरो योगो नारायणपरं तपः । नारायणपरं ज्ञानं नारायणपरा गतिः
nārāyaṇaparo yogo nārāyaṇaparaṃ tapaḥ | nārāyaṇaparaṃ jñānaṃ nārāyaṇaparā gatiḥ
SB 2.5.16