the Qur'an was collected, remained with Abu Bakr until Allah took him unto Him, and then with `Umar till Allah took him unto Him, and finally it remained with Hafsa, `Umar's daughter. Placement and coherence with other surahs The idea of textual relation between the verses of a chapter has been discussed under various titles such as nazm and munasabah in non-English literature and coherence, text relations, intertextuality, and unity in English literature. Hamiduddin Farahi, an Islamic scholar of the Indian subcontinent, is known for his work on the concept of nazm, or coherence, in the Quran. Fakhruddin al-Razi (died 1209 CE), Zarkashi (died 1392) and several other classical as well as contemporary Quranic scholars have contributed to the studies. The entire Qur'an thus emerges as a well-connected and systematic book. Each division has a distinct theme. Topics within a division are more or less in the order of revelation. Within each division, each member of the pair complements the other in various ways. The seven divisions are as follows: See also Repentance in Islam Appendix Notes References Bibliography External links Quran 9 Clear Quran translation Tawba Jihad At-Tawba