Sri Guru Gobind Singh and His Blue Arabian Horse Guru Gobind Singh Ji was famed for his blue coloured horse, in fact Guru Sahib Ji is sometimes known as ‘Neelay ghoray whalla’ or the owner of the blue horse and many a folk songs and vars sing the exploits of ‘Neelay ghoray they swaar’ the rider of the blue horse. Just as his grandfather Guru Hargobind Sahib Ji, Guru Gobind Singh instructed his Sikhs to make offerings of arms and horses in readiness for the turbulent times ahead. In anticipation of this Guru Gobind Singh Ji learnt the art of horsemanship from an early age under the guidance of his maternal uncle Bhai Kirpal Chand. ... It is not clear where the blue horse, affectionately known as Neela, was acquired from, it may have been a gift from a royal dignitary or from a devotee. Even today the lineage of the stallions continues at Hazoor Sahib, Nanded. The horses are kept in stables and are bred from the original stallion belonging to Guru Sahib Ji, although over time the blue colour has been diluted down to a grey white. No one is allowed to ride the horses as a mark of respect and they are brought out on the festival of Holla Mahalla or gurpurbs when they are beautifully decorated with tassels and riding gear. On occasions, especially on the festival of Holla Mahalla, it has been said that the horse will get extremely sweaty and agitated, as if it is being ridden. Source http://www.info-sikh.com/PageHorse1.html