In 622, over the invitation on the Muslims of Yathrib (afterwards Medina), Muhammad requested his followers to migrate there. The migration began in batches. Ali was the final to remain in Mecca, entrusted with accountability for settling any loans the Muslims experienced taken out, and famously slept inside the mattress https://uniteducs01233.blogdigy.com/detailed-notes-on-mabubakarmaken-60325685