(9) باب مَا جَاءَ فِيمَنْ يَحْلِفُ بِالْمَشْىِ وَلاَ يَسْتَطِيعُ
Narrated Anas:
"The Prophet (ﷺ) passed by old man walking (while supported) between his two sons, so he said: 'What is the matter with this one?' They said: "O Messenger of Allah! He vowed to walk.' He said: 'Verily Allah [the Mighty and Sublime] is in no need of this person punishing himself.'" He said: "So he ordered him to ride."
Reference: Jami` at-Tirmidhi 1537
In-book reference: Book 20, Hadith 15
English translation: Vol. 3, Book 18, Hadith 1537