Canonical version
The Master Walks to Bahjí
When Bahá’u’lláh lived at Bahjí—and ‘Abdu’l-Bahá at ‘Akká—the Master would visit His Father once a week. He liked to do this on foot and when asked why He did not ride to Bahjí He responded by asking, “… who am I that I should ride where the Lord Christ walked?”
However, His Father requested Him to ride, so in order to comply the Master rode out of ‘Akká, but when He sighted Bahá’u’lláh’s Mansion, He dismounted.
Bahá’u’lláh used to watch out for His approach from His second-floor window and as soon as He saw Him coming, He would joyously tell His family to go out to meet Him.
Source: Vignettes from the Life of ‘Abdu’l-Bahá (Annamarie Honnold), pp. 16–17.
Collected from bahaistories.com (Subject: selfless).