SHAFAQNA – The Grand Ayatollah Sistani answered questions throwing stones at Satan’s column during Hajj pilgrimage.
Question: What is your opinion about throwing stones (at Satan’s column) considering that the height of the column/wall has been increased to 20 metres, and during throwing stones, the previous place and the main place is impossible to be recognized; what is the duty?
The Grand Ayatollah Sistani: It is enough to throw to the middle of the wall.
Question: Is it allowed to throw stones from the second floor or not?
The Grand Ayatollah Sistani: According to Wajib precaution is not allowed and is not sufficient (not adequate).
Source: PERSIAN SHAFAQNA