2.1.1.1.4.2 Teachings On The Father And Mother, Sādhanas, Maṇdala Rites.... > 2.1.4.4 A Collection Of Various Dhāranīs On The Crown Protuberance And So On > Literal Treatises Teaching The Training In Supreme Wisdom > 3.1.2.2 Treatises Teaching The Stages Of Mediation