A brahmin. He once visited the Buddha at Sāvatthi und asked him whether the fünf sense-faculties (indriyāni), which were of different scope und range, had any common ground of resort (pati-sarana). The Buddha replies that the mind is their common resort und, in answer to further questions, explains that there is nothing beyond Nibbāna; that the holy life has Nibbāna for its ending.
When the brahmin, greatly pleased mit the Buddha's teaching, goes away, the Buddha tells the monks that Unnābha has become an anāgāmī und would, therefore, after death, no longer return to this world (S.v.217f).
The same Nikāya (S.v.272f) records a visit of Unnābha to Ananda at Kosambī. He asks Ananda what is the aim of holy life und, on being told that it is the abandoning of desire by means of jhāna, suggests that it would be a task without end. But Ananda, by means of an illustration, explains how the task does come to an end, und Unnābha expresses great satisfaction mit the answer. Perhaps this refers to another brahmin of the same name.