Shaykh (Al-Mufid), may Allah سبحانه وتعالى support him, said: “One should wait before washing and burying someone afflicted by severe illnesses, drowning, struck by lightning, trapped under a collapsed house, or fallen walls. The burial should not be hastened, as they may have experienced temporary fainting or weakness mistaken for death. Once their death is confirmed, they should be washed, shrouded, and buried. However, they should not be kept for more than three days, as there remains no doubt about their death after three days.”