The conquest of Persia was accomplished with surprising rapidity. Shortly after the death of the king, Islamism was imposed upon all; but certain amongst the Mazdiens offered resistance, and even succeeded in remaining in their fatherland; others, unwilling to accept the law of the Koran, abandoned their hearths, and went and dwelt in the mountainous districts of Khorassan, [11] where, for a hundred years, they were enabled to live and practise their religion without being disturbed. They were, however, obliged to quit this asylum and to take refuge in large numbers in the little island of Hormuz, [12] at the entrance of the Persian Gulf. Here they made but a short sojourn, and finally decided to seek the protection of the Hindoos. They procured vessels and embarked with their wives and children. The relations between Persia and India had been rather frequent, and it was precisely their former intercourse, rendered closer a few centuries before the Arab invasion, that made this migration possible. This we can see from an interesting resume given in the Gazetteer of the Bombay Presidency, p. 247, and which we reproduce here:-- "In legendary times some religious connection had existed between the great prophet Zoroaster, who flourished about 1000 B.C. (see Haug, Essays, 299), and the Brahman Tchengreghatchah, who was sent back to convert his compatriots. (See also in Firdusi the story of Prince Isphandiar, son of Gustasp, who was such a fervent disciple of Zoroaster that he persuaded the Emperor of India to adopt the worship of fire,--Elliot, History, v. 568). The Hindoo tradition of the introduction of fire-worshipping priests from Persia into Dwarka in Kathyawar is probably of a much later date (Reinaud, Memoire sur l'Inde, 391-397). Another link, and this time of an entirely political nature, is discovered in the mythical conquests of Northern India, which, according to Persian writers, must have followed from the year 1729 B.C. (Troyer, Rajatarangini, ii. 441). In historical times the Punjaub formed part of the Persian dominions since its conquest by Darius Hystaspes (510 B.C.) down to the end of the dynasty of the Achaemenides (350 B.C.). (Rawlinson, Ancient Monarchies, iv. 433.) "Towards the commencement of the Christian era, as is seen from the fire altars on their coins, the Kanerkis or the Scythians of India, the rulers of the Punjaub, seem to have adopted the religion of the Magi (Lassen, in J. B. A. S. ix. 456; Prinsep, Note on Historic Researches from Bactrian Coins, 106). As far as Southern India is concerned, the mention of Brahmani Magi in Ptolemy (150) seems to indicate some relation with Persia, but the Kanarese word mag or 'son' gives a sufficient explanation.