Imam Taqi al-Din al-Hisni al-Shafi’i (d.829AH) mentions some points regarding Imam ibn Rajab al-Hanbali (d.795AH) and some of his negative views concerning ibn Taymiyya:
al-Shaykh Zayn al-Din ibn Rajab al-Hanbali was from among those who firmly believed in ibn Taymiyya’s kufr (disbelief), and had (authored) refutations against him. He would say at the top of his voice during some gatherings:
“al-Subki is excused – meaning in regards to his takfir“.
[al-Hisni, Daf’ Shubah man Shabbaha wa Tamarrad, ed. Dar al-Mustafa, pg. 535]
وكان الشيخ زين الدين بن رجب الحنبلي ممن يعتقد كفر ابن تيمية وله عليه الرد. وكان يقول بأعلى صوته في بعض المجالس: معذور (173/أ) السبكي – يعني في تكفيره ([1]).
__________
([1]) في ب: معذور السبكي في تكفيره
دفع شبه من شبه وتمرد، دار المصطفى، ص. ٥٣٥
The Reality of ibn Taymiyya 