This chapter concerns the recommendation that, when the imam is unable to stand in the prayer, he should appoint someone else as his deputy (khalifah).
Husayn bin Ali (al-Ju'fi) narrated it with the same chain in similar words, except that he added: The Messenger of Allah (peace and blessings be upon him) fell ill and his illness grew severe.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 5068