Leaning towards the qiblah and sitting with the knees drawn up

Ibrahim said: The early generations (salaf) disliked sitting with one's back leaning against the qiblah after the sunnah rak'ahs of Fajr.

Al-Qasim bin Abd al-Rahman said: Once Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) came to the mosque and saw some people leaning against the qiblah wall, so he said to them: "Move aside like this, away from the faces of the angels!"

Mujahid said: After dawn broke, Sayyiduna Ibn Umar (may Allah be pleased with them both) would pray the sunnah rak'ahs of Fajr and then sit with his knees drawn up and wrapped (ihtiba'), and we would sit around him. When he saw one of us dozing, he would nudge him, and he himself would doze while sitting in ihtiba'. Then the prayer would be established, and he would get up and join the congregation.

The father of al-Qasim said: Once Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) came to the mosque and, seeing some people leaning against the qiblah wall, he said: "Move away from the qiblah and sit; do not come between the angels and their prayer. These two rak'ahs are also the prayer of the angels."