تُعد الكتب والمواقع التالية مصدرًا رائعًا للتعمق في تاريخ العهود وتطورها:

• El-Wakil, Ahmed. 2017. “Searching for the Covenants: Identifying Authentic Documents of the Prophet Based on Scribal Conventions and Textual Analysis.” MA diss. Hamad Bin Khalifa University.
• El-Wakil, Ahmed. 2019. “The Prophet’s Letter to al-ʿAlāʾ b. Al-Ḥaḍramī: An Assessment of Its Authenticity in Light of the Covenants and the Correspondence with the People of Yemen.” Islam and Christian–Muslim Relations (2019): 1-32.
• El-Wakil, Ahmed. 2019. “‘Whoever Harms a Dhimmī I Shall Be His Foe on the Day of Judgment’: An Investigation into an Authentic Prophetic Tradition and Its Origins from the Covenants.” Religions. 2019; 10 (9): 516.https://doi.org/10.3390/rel10090516
• Mkrtumyan, Gayane. 2021. “An Historical Evaluation of the Covenants of the Prophet Muḥammad and ‘Alī ibn Abī Ṭālib in the Matenadaran,” Religions 12, no. 2: 138.https://doi.org/10.3390/rel12020138
• Morrow, John Andrew. 2021. “The Covenants of the Prophet and the Problems of Transmission: An Analysis of a Manuscript Copied by Fāris al-Shidyāq,"” Religions 12, no. 9: 751.https://doi.org/10.3390/rel12090751
• Zein, Ibrahim and Ahmed El-Wakil. 2020. “Khālid b. al-Walīd’s Treaty with the People of Damascus: Identifying the Source Document through Shared and Competing Historical Memories,” Oxford Journal of Islamic Studies, 31, 3: 295-328.
• Zein, Ibrahim and Ahmed El-Wakil. 2020. “Remembering the Covenants of the Prophet Muhammad: Shared Historical Memory of Good Governance and Peaceful Co-Existence,” Al-Shajarah, 25, 2: 219-262.
• Zein, Ibrahim and Ahmed El-Wakil. 2021. “On the Origins of the Hijrī Calendar: A Multi-Faceted Perspective Based on the Covenants of the Prophet and Specific Date Verification,” Religions 12, no. 1: 42.https://doi.org/10.3390/rel12010042