Did the Messenger of Allah, may Allah bless him and grant him peace, write a document for the Christians of Najran that included security for their lives, their properties, and their places of worship, protection for their religion, and exemption from fighting, land tax (kharaj), and jizya, provided they fulfilled their obligations to the Muslims and were granted their rights?

The aforementioned treaty, with its exact wording, has not been found in the books of Hadith and Sira. What was mentioned in the question contained violations of the Sunnah and Sira, such as the abolition of jizya (tribute) and the generalization of the treaty. It has been established that jizya was taken from the Christians of Najran, and what was claimed about guarding their religion is absolutely false.

The text of the document mentioned in "Al-Tabaqat Al-Kubra" by Ibn Sa'd and "Dala'il Al-Nubuwwah" by Al-Bayhaqi refers to a treaty that included conditions such as jizya (two thousand حلل - garments), the loan of thirty coats of mail, horses, and camels when needed, and the Prophet's guarantee of their security, religion, and properties, provided they did not consume usury or commit injustice, and that no one would be held accountable for the injustice of another.

A number of companions bore witness to this.