Not graded
Riyad as-Salihin 339
وعن أبي محمد جبير من مطعم رضي الله عنه أن رسول الله صلى الله عليه وسلم قال:
"لايدخل الجنة قاطع"
Abu Muhammad Jubair bin Mut'im (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "The person who severs the bond of kinship will not enter Jannah".
[Al-Bukhari and Muslim].
Cited in Riyad as-Salihin (No. 339).