Imaam Tahawi mentions in his Mukhtasar explicitly that there should NOT be made any gesture during the tashahhud.
However in the Muwatta of Imaam Muhammad (rah) it is written:
Maalik has informed that Muslim ibn abi maryam informed from ali ibn abdur rahman al muawiy that he said, 'abdullah ibn umar (ra) saw me whilst i was playing with pebbles in salaat. When i truned (agater completing my salaat), he prevented me sayin "do as nabi (peace be upon him) did. I asked 'what was Nabi's practice?. He said,'when nabi sat in salaat, he pleaced his right hand on his right thigh and he lasped all his fingers and pointed with the finger next to thumb, ie. Index finger and he placed his let hand on his left thigh.
Imaam Muhammad [ra] said, ‘We adopt the practice of Nabi [sallallaahu alayhi wasallam] and this is the view of Imaam Abu Hanifa [ra]’
I want to ask on which narration did Imaam Tahawi rely by mentioning explicitly that there should be no sign made ? Do any of the Shuruuh on the Mukhtasar highlight this issue?
Also Imaam Muhammad does not mention the raising and the lowering (raising it at " laa ilaaha" and lowering it at saying "ill Allaah") he only concurs with the practice in the hadith which only mention pointing during the sitting.
So from where did the Hanafis enquire the raising and lowering? Is there any narration from the madhab?