Among those who came before you, a man would be seized and held in a pit dug for him in the ground, and he would be sawed into two halves from his head, and his flesh would be torn away from his bones with iron combs, and none of this would turn him away from his religion

In this Hadīth, Khabbāb (may Allah be pleased with him) tells the story of the suffering that the Muslims faced from the disbelievers of the Quraysh in Makkah. They came complaining to the Prophet (may Allah's peace and blessings be upon him) while he was lying in the shade of the Ka‘bah placing his head on his cloak. The Prophet (may Allah's peace and blessings be upon him) explained that those who lived before us experienced severer trials regarding their religion.

A pit would be dug for one of them and he would be thrown into it; then a saw would be brought to the top of his head and he would be sawed into two halves; and his flesh would be torn away from his bones with iron combs, which was extreme suffering. Then he swore that Allah, the Almighty, would complete this matter, meaning that He would complete the message of Islam that the Messenger (may Allah's peace and blessings be upon him) had brought.

This would be done in such a way that the one traveling from Sana'a to Hadramaut would fear none except Allah and the wolf for his sheep. Then he guided his noble Companions to stop rushing things, saying: "But you are rushing things," meaning: have patience and await relief from Allah, for Allah will surely complete this matter, and things went just as the Prophet (may Allah's peace and blessings be upon him) swore they would go.