Seyed Ali Shobayri, Seyed Ali Shobayri is of mixed Iranian and Scottish descent who found the path of the Ahlul Bayt (a) by his own research. He holds a BA in Islamic Studies from Middlesex University through the... Answered 10 months ago

Bismillah, 

Asalamu Alaykom, 

No it isn't necessary for you to say any specific words or have a particular intention for purifying something; you may just do the action. Yes other acts such as wudu, ghusl, salah and fasting etc would require an intention. 
 

May Allah grant you success