Hadith 6:122
'Abd al-Razzaq narrated to us, from Ma'mar, from Ayyub, from Abu Qilabah, who said: If the illness of the deceased becomes prolonged, he is to be washed with *ushnan* (a type of soapwort/alkaline plant).
حدثنا عبد الرزاق عن معمر عن أيوب عن أبي قلابة قال إذا طال ضنى الميت غسل بأشنان