The Allahdad (الله داد, ) was an 1839 pogrom perpetrated by Muslims against the Mashhadi Jewish community in the city of Mashhad, Qajar Iran. It was characterized by the mass-killing and forced conversion of the Jews in the area to Islam. Following this event, many of the Mashhadi Jews began to actively practice crypto-Judaism while superficially adhering to Islamic beliefs. The Allahdad incident was a prominent event in the ambivalent history of Jewish–Muslim relations due to the fact that an entire community of Jews were forced to convert, and it was one of the first times European Jewry intervened on behalf of Iranian Jews. The event was first described in Joseph Wolff's 1845 travelogue "Narrative of a mission to Bokhara", in which he wrote: On Monday, the 11th of March, I arrived at Askerea, two miles distant from Meshed. I had sent on before the King's mehmoondar, and the gholam of the British embassy. The first who came to meet me was Mullah Mehdee (Meshiakh), the Jew with whom I had lodged twelve years ago, and who treated me most hospitably when in distress and misery and poverty, previous to the arrival of Abbas Mirza at Meshed, from Nishapoor. All the Jews of Meshed, a hundred and fifty families, were compelled seven years ago, to turn Mussulmans. The occasion was as follows: A poor woman had a sore hand; a Mussulman physician advised her to kill a dog and put her hand in the blood of it; she did so; when suddenly the whole population rose, and said that they had done it in derision of their Prophet. Thirty-five Jews were killed in a few minutes; the rest, struck with terror, became Muhammedans ; and fanatic and covetous Muhammedans shouted, "Light of Muhammed has fallen upon them!" They are now more zealous Jews in secret than ever; but call themselves, like the Jews in Spain, Anusim, "the compelled ones!" Their children cannot suppress their feelings when their parents call them by their Muhammedan names! But Mullah Mehdee and Mullah Moshe believe in Christ, and Mullah Mehdee asked me to baptize him.