Prohibiting riding as an act of worship and vowing to perform Hajj on foot

Question:
The Shaykh’s case, may Allah preserve you: If a person looks at something and says, “I will not ride, so that I may resemble the practice of the pre-Islamic age of ignorance (jahiliyyah),” and considers this a form of shirk (associating partners with Allah) because the benefit sought is to seek the opinion of the people?

Answer:
Yes, if he forbids himself from riding, this contains a resemblance to the prohibition of lawful things in the religion of the pre-Islamic age of ignorance (jahiliyyah). The scholars differed on whether a person who vows to perform Hajj on foot as an act of worship for Allah the Exalted is required to fulfill this vow. He is not required to do so; rather, he should ride and expiate for his vow, just as the Prophet (peace and blessings be upon him) issued a ruling for a woman who vowed to perform Hajj on foot, and likewise for a man who vowed to perform Hajj on foot. He ruled that he should ride and expiate for his vow with the expiation for an oath.