Hadith.4278 - Imam (as) was asked about a man who, in a state of anger, said:
"Upon me is to walk to the Sacred House of Allah (swt)."
Imam (as) said: "If he did not say, 'It is a vow to Allah (swt) upon me,' then it is of no consequence."
Al-Kāfi #958“I once asked abu ‘ Abd Allah (a.s.), about a man who has made a vow to walk to Bayt Allah al-Haram (the Sacred House of Allah): if it is...