BibTeX:
@incollection{Various,
  author = {Various},
  title = {Aqa Husayn related that Shaykh Mahmud (whose wondrous story we shall},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/mirza-mihdi},
}

APA:
Various. Aqa Husayn related that Shaykh Mahmud (whose wondrous story we shall. In *bahaistories.com archive*.

MLA:
Various. "Aqa Husayn related that Shaykh Mahmud (whose wondrous story we shall." *bahaistories.com archive*, n.d..

Chicago:
Various. "Aqa Husayn related that Shaykh Mahmud (whose wondrous story we shall." In *bahaistories.com archive*, n.d..