 He trained a number of significant philosophers in the period in Qom, the most important of whom were Muhsin Fayz-i Kashani (d. 1090 AH/1680–1), who studied with him between 1030 AH/1620–1 and 1038 AH/1628–9, as attested in Fayz’s autobiographical treatise Sharh-i Sadr, and ‘Abd al-Razzaq Lahiji (known as Fayyaz-i Lahiji, d. 1072 AH/1661–2), both of whom became his sons-in-law. Other students included the philosophers Husayn Tunikabuni (d. 1105 AH/1693–4) and Muhammad Riza Aqajani (d. 1071 AH/1660–1). After his retreat to Qom, Mulla Sadra probably married in Shiraz. One modern source suggests that his wife was the daughter of Mirza Zia al-Din Muhammad Razi, which would mean that his wife and the mother of Fayz were sisters, suggesting a relationship that predates the teacher and student one. As an affluent man, Mulla Sadra had five children who survived and a large household, including retainers and students. His first-born Umm Kulsum was born in 1019 AH/1610–1 and later married his student Fayyaz-i Lahiji in Qom. Another daughter Zubayda was born in 1024 AH/1615 in Qom and later married Fayz-i Kashani. His third daughter Ma‘suma was born in Qom in 1033 AH/1623–4 and later married another student, Qutb al-Din Muhammad Nayrizi, about whom nothing is recorded. Mulla Sadra also had three sons who became scholars in their own right: Ibrahim, who was born in Qom in 1021 AH/1612–3, became a prominent theologian at court, and died in Isfahan in 1071 AH/1660–1: Nizam al-Din Ahmad, who was born in Kashan in 1031 AH/1621–2 and died in Shiraz in 1074 AH/1664; and his youngest son Muhammad Riza, who was probably born in Qom but about whom we do not have any biographical information.