He rejected fees and formalities, and stayed away from sectarianism and traditional forms of worship.

Ahmed was unique in his orientations and opinions, so he denied philosophical schools such as incarnation and pantheism. He relied on the Book of God and the authentic Sunnah of the Prophet (peace be upon him) and on the consensus of the Companions, not the consensus of all Muslims. He discarded analogy, rejected all ijtihad after the Companions, and refused to act upon it.

Muhammad Uthman was a devoted student of the same Sayyid Ahmed bin Idris. Muhammad Uthman preached and called as a student of Sayyid Ahmed. Muhammad Uthman did not disown his teacher even after his death and the establishment of his own tariqa. He continued to repeat in his writings that Ahmed was his teacher, and his sons and followers followed his path after him.

It is stated in his work (The Divine Secrets in the Birth of the Best of Creation), known as the Mawlid, that he is "(a student of Ibn Idris, Ahmed, the one of praiseworthy deeds)."

He says in Al-Zuhur Al-Faiqah: "(I am a student of the عارف بالله (gnostic of God) of sanctity, the exemplar to the two presences, our master, the blessing, our noble patron, Ahmed bin Idris)."

The students of Ahmed bin Idris did not try to establish their own tariqas during his lifetime. Rather, they preached the ideas of their teacher and spread his teachings until his death. However, a dispute arose after his death concerning his succession. Ibn Idris died without indicating the issue of leadership of the Idrisiyya school after him. This led to a dispute among the senior students of Sayyid Ahmed, namely Muhammad Uthman Al-Mirghani, Muhammad bin Ali Al-Sanusi, and Ibrahim Al-Rashid, in addition to the sons of Sayyid Ahmed bin Idris himself.

The dispute over the leadership of the Idrisiyya school led these students to establish their own tariqas.

Hassan Makki Muhammad Ahmed (Dr.) Sudanese Culture in Sudan: Meaning and Content (On the occasion of the passing of 1000 Hijri years since the establishment of the Islamic Sultanate of Suthar) (Africa University: Center for Research and Translation) (History of Yemen, p. 27) Muhammad Ibrahim Abu Salim: Introduction to Al-Abbala, p. 10 Al-Mirghali, Muhammad Uthman: Al-Asrar Al-Rabbaniyya fi Mawlid Khair Al-Bariyya, First Edition (Khartoum: Al-Maktaba Al-Islamiyya, p. 4) Al-Mirghani, Muhammad Uthman: Al-Zuhur Al-Faiqah fi Huquq Al-Tariqa Al-Sadiqah within Al-Rasa'il Al-Mirghaniyya fi Adab Al-Tariqa Al-Khatmiyya, Second Edition (Mustafa Al-Bayi Al-Halabi, Egypt, p. 8) Ali Saleh Karrar (Dr.), previous source, p. 54