How does Huzoor (aa) prepare for his Friday sermons?

During a virtual mulaqat of Majlis Atfal-ul-Ahmadiyya Germany with Hazrat Khalifatul Masih V^aa, which was held on 29 November 2020, a tifl asked as to how Huzoor^aa prepared his Friday sermons. 

Huzoor^aa replied: 

“There are certain topics which are research-based. For example, nowadays I am narrating the historical accounts of [the lives of] some of the Companions^ra. The research team working with me find the references etc. and sends them to me. 

“However, for the general sermons I deliver on various topics such as Tahrik-e-Jadid, Waqf-e-Jadid or in relation to tarbiyat, I take a verse of the Holy Quran and prepare all the citations myself by hand in order to further explain and elaborate it. The research team assists me in this as well if I need any references. Sometimes I extract all the references myself, at other times I tell my research team to find me such and such reference and then I prepare the Friday Sermon.”