Q. Someone is camping out during the Three Weeks including Tisha Beav and sleeping on the ground the whole time. Should he on the night of Tisha Beav sleep directly on the floor without his sleeping bag?
A. Shulchan Aruch (O.H.555: 2) rules that some have the tradition of sleeping on the ground on the night of Tisha Beav and also place a stone as a pillow. Rema (ibid. adds) that if one usually sleeps with two pillows, he should abstain and use only one.
Horav Shlomo Miller’s Shlit’a opinion is that it in this case it may be unnecessary since after all he is already sleeping on the ground.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a