Musannaf Ibn Abi Shaybah

Hazrat Haysam bin Shahab saw a man sitting cross-legged while performing prayer. He forbade him from doing so, but the man refused to accept his advice. Hazrat Haysam said that I heard Hazrat Abdullah bin Mas'ud (may Allah be pleased with him) say: "It is more beloved to me that I sit on stones heated by fire than that I perform prayer sitting cross-legged."

Hazrat Sha’bah says that I asked Hazrat Hakam about sitting cross-legged (with four limbs) while offering prayer, so he declared it disliked and said that Hazrat Ibn Abbas (may Allah be pleased with them both) also considered it disliked.

Hazrat Hammad states that Ibrahim considered sitting cross-legged in prayer as disliked and said: Do not sit in prayer as you sit for conversation.

Ibrahim considered it disliked for a person to sit in prayer in the manner that people sit when talking to each other.

Hazrat Mughira bin Hakeem Sana'ani narrates that I saw Hazrat Ibn Umar (may Allah be pleased with them) sitting cross-legged after raising his head from the last prostration at the end of the prayer. When he finished the prayer, I asked him about this. He replied that there is pain in my foot.

Hazrat Nafi' narrates that Hazrat Ibn Umar (may Allah be pleased with them) performed the prayer sitting cross-legged due to pain.

Muhammad considered it undesirable for a person to sit cross-legged in prayer before reciting the Tashahhud.

Hazrat Ibn Sirin narrates that Hazrat Ibn Umar (may Allah be pleased with them) sat cross-legged and performed the prayer, and said that this is not Sunnah. I performed the prayer in this manner due to pain.

Hazrat Tawus sat cross-legged and performed the prayer, and said that this is the way kings sit.