Khabab reported,

We came to the Messenger of Allah ﷺ while he was reclining on a cloak in the shade of the Kaabah. We complained to him, saying, "Will you not seek Nasr for us? Will you not pray to Allah for us?"He sat up, his face flushed, and said, "Among those before you, a man would be seized and a pit would be dug for him in the ground. Then a saw would be brought and placed on his head, and he would be split in two, yet that would not turn him from his religion. He would be combed with iron combs that tore away the flesh and sinew from his bones, yet that would not turn him from his religion. By Allah, Allah will surely complete this matter, until a rider will travel from Sana to Hadramawt fearing none but Allah the Exalted, and the wolf for his sheep. But you are being hasty."

Abu Dawud 2649

Sahih

حدثنا عمرو بن عون أخبرنا هشيم وخالد عن إسمعيل عن قيس بن أبي حازم

عن خباب قال

أتينا رسول الله ﷺ وهو متوسد بردة في ظل الكعبة فشكونا إليه فقلنا ألا تستنصر لنا ألا تدعو الله لنا فجلس محمرا وجهه فقال قد كان من قبلكم يؤخذ الرجل فيحفر له في الأرض ثم يؤتى بالمنشار فيجعل على رأسه فيجعل فرقتين ما يصرفه ذلك عن دينه ويمشط بأمشاط الحديد ما دون عظمه من لحم وعصب ما يصرفه ذلك عن دينه والله ليتمن الله هذا الأمر حتى يسير الراكب ما بين صنعاء وحضرموت ما يخاف إلا الله تعالى والذئب على غنمه ولكنكم تعجلون

أبو داود 2649صحيح
Contents
Reference
Commentary
Ayat
Collection
Sunan Abu Dawud
Book
Jihad
Chapter
Captive who is compelled to disbelieve
Numbering
Darussalam 2649
Abu Dawud 2649