After a while, his wife Khadijeh Saqafi and second son Ahmad Khomeini joined them in Najaf.[1] Khomeini began teaching Fiqh in the Sheikh Morteza Ansari Madrassah which captivated students mainly from Iran, Iraq, India, Pakistan, Afghanistan, and the Persian Gulf states.[28] In April 1967, Khomeini wrote the two letters, once to Ulama in order to persuade them to attempt to overthrow the Shah's regime and another to Amir-Abbas Hoveyda, protesting the coronation of the Shah[29] and condemning him for continued violation of both Islam and the constitution.[30] Also, Khomeini forbade any type of dealing with Israel.[31] Four years into his Iraqi exile, between 21 January and 8 February (1970), Khomeini gave lectures about Vilayat-e Faqīh ya Hukumat-i Islami, which in Shia Islam hold that Islam gives a faqīh (Islamic jurist) custodianship over people.[32]