Son doing ghusl for his mother after she passed away
Question

                There is a man whose mother reached the age of approximately 80 years. She suffered from a stomach disease and was sick for two years, then she passed away. He did ghusl for her, as an act of kindness and honour on his part; he did not need to do that as there were others who could do it. What is the right thing to do? May Allaah reward you with good.
Praise be to Allah.The way things were was done 
	at the time of the Prophet (peace and blessings of Allaah be upon him) and 
	the Rightly-Guided Khaleefahs (may Allaah be pleased with them) was: when a 
	woman died, she would be washed by other women, not by men, except in the 
	case of a wife whose husband could wash her or leave it to the women. The 
	same applied to a slave woman in relation to her master, so long as she was 
	permissible for him. If a man died, he would be washed by other men, not 
	women, except in the case of a husband, whose wife could wash him, or leave 
	that to the men. Based on this, your doing ghusl for your mother is contrary 
	to sharee’ah, because of what is known from the Prophet (peace and blessings 
	of Allaah be upon him) and his companions (may Allaah be pleased with him), 
	even if your mother was old. You have to seek Allaah’s forgiveness and 
	repent to him, and not do anything like this with any of your other mahrams, 
	even if your intention is good and you want to honour them.
And Allaah is the Source of 
	strength. May Allaah bless our Prophet Muhammad and his family andcompanions.