Can you please code a hadith which explains the masah (of the head, ears, and especially back of the neck). 2; how we can distinguish between thick and spares beard

1. Hadhrat Mugheera ibn Shu'ba (Radhiallaahu Anhu) narrates that Nabi (Sallallaahu Alayhi Wasallam) once passed by some people, relieved himself and thereafter performed Wudhu, making Masah upon his forehead.' %0D%0AIbn Abbaas (Radhiallaahu Anhu) narrates that Nabi (Sallallaahu Alayhi%0D%0AWasallam) when performing Wudhu gargled his mouth, rinsed his nostrils and%0D%0Aafter washing his face and hands uptil his elbows, he made Masah upon his%0D%0Ahead and ears using both index fingers for the inner portion and the thumbs%0D%0Afor the outside part.' There are lots of Ahaadith indicating to Masah of the%0D%0Aneck, however, all of them are weak. From this, the Fuqahaa state that it is%0D%0AMustahabb to make Masah of the neck.%0D%0A2. If the skin is visible and the water can reach the skin, then this is%0D%0Asparse and it will be compulsory for one to make sure that the water reaches%0D%0Athe skin. If it is not visible, but instead, the hair covers up the skin%0D%0Aproperly, then this will be thick, hence, it will not be compulsory.%0D%0A%0D%0Aand Allah Ta'ala Knows Best%0D%0A%0D%0AMufti Ebrahim Desai