Accountability is an act of worship

The second hadīth in an-Nawawi's collection teaches that it is righteousness to worship Allah as if

At the end of his prayer, how may sitting for at-tashahud are expected of someone who misses two rak'ats in a congregational salā al- magrhib?

'Still less can their knowledge comprehend the hereafter ...' Q. 27:66). This verse above of the Qur'ān implies that

According to Islamic teachings, angels are