WE RELATE FROM the book of Ibn as-Sunnī from al-Haytham ibn Ḥanash who narrated: “We were with ‘Abdullāh ibn ‘Umar 
when his leg became numb. A man said to him: ‘Remember the dearest of people to you.’ He said: ‘O Muḥammad 
!’ It was as if he was set free from a cord that had bound his feet.” [1].
when his leg became numb. A man said to him: ‘Remember the dearest of people to you.’ He said: ‘O Muḥammad !’ It was as if he was set free from a cord that had bound his feet.” [1].
Yā Muḥammadu ṣalla-llāhu ‘alayhi wa sallam.
We relate [from the same source] from Mujāhid that a man’s leg became numb in the presence of Ibn ‘Abbās and he said to him: “Remember the most beloved of all men to you.” He said: “Muḥammad .” His numbness went away. [2].
and he said to him: “Remember the most beloved of all men to you.” He said: “Muḥammad .” His numbness went away. [2].We relate [from the same source] from Ibrāhīm ibn al-Mundhir al-Ḥizāmī—one of al-Bukhārī’s shaykhs, from whom he narrated in his Ṣaḥīḥ—who said that the people of Madīnah wonder at this verse by [the famous poet] Abū al-‘Atāhiyah:
On some occasions his foot would become numb;
and if he said not ‘O ‘Utb!’ the numbness would not go.
References
[1] Ibn as-Sunnī (169).
[2] Ibn as-Sunnī (168).