The Tibetan life of Naropa opens with him at the height of an academic career, a celebrated scholar at a great monastic university, when a hideous old woman appears to him and asks whether he understands the words of the texts or their sense. He answers the words, and she is delighted. He then says he also understands the sense, and she weeps, because that is a lie. She tells him to go and find her brother Tilopa.
What follows is a sequence of ordeals, twelve major and twelve minor in the standard telling. Tilopa refuses to teach, behaves outrageously, and at intervals issues an instruction which Naropa obeys without hesitation: to jump from a temple roof, to walk into a fire, to be beaten, to leap into a leech-filled swamp, to give away everything. Each time he is broken, and each time Tilopa restores him and gives a fragment of teaching. At the end Tilopa strikes him in the face with a sandal and he understands.
The narrative is a hagiography of a specific kind, and its subject is the uselessness of scholarship without realisation. It was written and transmitted in Tibet, in monasteries whose own students were spending years on exactly the textual study it warns about, which is a tension the tradition maintained deliberately. Of the historical Indian teacher behind it, very little independent can be said.