Strabo, Geography
H.C. Hamilton, Esq., W. Falconer, M.A., Ed.

Aristobulus says, that he saw at Taxila two sophists (wise men), both Brachmanes, the elder had his head shaved, but the younger wore his hair; both were attended by disciples. When not otherwise engaged, they spent their time in the market-place. They are honoured as public counsellors, and have the liberty of taking away, without payment, whatever article they like which is exposed for sale; when any one accosts them, he pours over them oil of jessamine, in such profusion that it runs down from their eyes. Of honey and sesamum, which is exposed for sale in large quantity, they take enough to make cakes, and are fed without expense.

They came up to Alexander's table and took their meal standing, and they gave an example of their fortitude by retiring to a neighbouring spot, where the elder, falling on the ground supine, endured the sun and the rain, which had now set in, it being the commencement of spring. The other stood on one leg, with a piece of wood three cubits in length raised in both hands; when one leg was fatigued he changed the support to the other, and thus continued the whole day. The younger appeared to possess much more self-command; for, after following the king a short distance, he soon returned to his home. The king sent after him, but he bade the king to come to him, if he wanted anything of him. The other accompanied the king to the last: during his stay he changed his dress, and altered his mode of life, and when reproached for his conduct, answered, that he had completed the forty years of discipline which he had promised to observe: Alexander made presents to his children.