While writing an Arabic biography of his teacher ‘Allāmah Khalīl Aḥmad Sahāranpūrī (1852 – 1927)*, Shaykh al-Islām Mawlānā Ḥusayn Aḥmad Madanī (1879 – 1957) states while listing his works:
فمنها: المهند على المفند، ذكر فيها معتقداته ومعتقدات مشايخه الكرام أتباع الأسلاف العظام، وأهل السنة الفخام، ردا على ما افترى عليهم الخبثاء اللئام، مما تقشعر منه الجلود وتفتت عنه العظام
“One of them is al-Muhannad ‘ala l-Mufannad, in which he described his beliefs and the beliefs of his noble teachers, followers of the great predecessors and the glorious adherents of Sunnah, in refutation of what the wicked, vile ones invented about them, from which the skins crawl and bones crumble.” (Badhl al-Majhūd, Dārul Bashā’ir al-Islāmiyyah, 1:79)
Recall ‘Allāmah Khālid Maḥmūd’s comment on ‘Allāmah Khalīl Aḥmad Sahāranpūrī referring to Aḥmad Riḍā Khān Barelwī and his followers as a “Satanic Army”:
Those who at times are heard saying in the circles of the ‘Ulamā’ of Deoband that Mawlānā Aḥmad Riḍā Khān gave his fatwā against the ‘Ulamā’ of Deoband in the passion for prophetic love, and not out of ill-intention, how untrue this is! The Akābir of the ‘Ulamā’ of Deoband called them a Satanic Army and these ignoramuses consider him to be intoxicated in prophetic love! There is a great disparity between the two. (Muṭāla‘ah Barelwiyyat. 5:68-9)
Shaykh al-Islām Mawlānā Ḥusayn Aḥmad Madanī has much more to say about his opinion on Aḥmad Riḍā Khān Barelwī and his followers in his dedicated work on this topic, written in 1910, al-Shihāb al-Thāqib. See:
https://barelwism.wordpress.com/2017/02/20/mawlana-madani-barelwis-are-wahhabis/
https://barelwism.wordpress.com/2017/02/22/mawlana-madani-barelwis-are-little-rafi%E1%B8%8Dis/
Mawlānā Madanī: Barelwī Takfīr Falls Back on Aḥmad Riḍā Khān Barelwī and his Followers
* The biography was written in the lifetime of ‘Allāmah Khalīl Aḥmad Sahāranpūrī.
Barelwis: A Critical Review 