Both Tariq and Musa were simultaneously ordered back to Damascus by the Umayyad Caliph Al-Walid I in 714, where they spent the rest of their lives. The son of Musa, Abd al-Aziz who took the command of troops of Al-Andalus was assassinated in 716. In the many Arabic histories written about the conquest of southern Spain, there is a definite division of opinion regarding the relationship between Ṭāriq and Musa bin Nusayr. Some relate episodes of anger and envy on the part of Mūsā, that his freedman had conquered an entire country. Others do not mention, or play down, any such bad blood. On the other hand, another early historian al-Baladhuri (9th century) merely states that Mūsā wrote Ṭāriq a "severe letter" and that the two were later reconciled.