BibTeX:
@incollection{Various,
  author = {Various},
  title = {It is told that in the home of Bahá’u’lláh there was a beautiful rug upon which…},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/generosity},
}

APA:
Various. It is told that in the home of Bahá’u’lláh there was a beautiful rug upon which…. In *bahaistories.com archive*.

MLA:
Various. "It is told that in the home of Bahá’u’lláh there was a beautiful rug upon which…." *bahaistories.com archive*, n.d..

Chicago:
Various. "It is told that in the home of Bahá’u’lláh there was a beautiful rug upon which…." In *bahaistories.com archive*, n.d..