Sa'id bin Jubayr (may Allah have mercy on him) said: I asked Sayyiduna Ibn Umar (may Allah be pleased with them both): Should one take a ritual bath after washing a deceased person? He said: What is the deceased? I said: I hope that he is a believer. He said: Then touch the believer as much as you are able (that is, one may touch the deceased and wash him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1464