1. In Tayammum one should remove the excessive soil from his hands by dusting them once or twice, and even if no part of soil is visible on the hands after dusting them, then too Tayammum will be valid.

2. One can do Tayammum on the bricks that have paint and cement on them; with the proviso that the paint is not oil-based or made of something which is not genus of the earth. Hence, one cannot make Tayammum on walls that are painted by oil-based paints. Notwithstanding that, if there is dust on the oil-based painted wall or anything on which one cannot perform Tayammum, one will be allowed to make Tayammum with that. Moreover, in the present era, most paints are oil-based or made from something which is not from the genus of earth; therefore, one should refrain performing Tayammum on them.

3. It is Sunnah to use the inner part of the hand; however, if one uses the outer part of the hand, his Tayammum will still be valid (as long as he fulfil the rites of it which is; to make intention of performing Tayammum, striking both hands on the clean earth or dust, rubbing his entire face once, and rubbing his hands including elbows once); however by doing it this way, he will be acting against the Sunnah. 

AND ALLAH TA'AALA ALONE IN HIS INFINITE KNOWLEDGE KNOWS BEST

ANSWERED BY: MOHSIN KHAN

Islamic Date: ٢٠ شوال ١٤٤٠ English Date: 24 June 2019