Guru Amar Das named his disciple and son-in-law "Jēṭhā" as the next Guru, who came to be known as Guru Ram Das. The new Guru faced hostilities from the sons of Guru Amar Das and therefore shifted his official base to lands identified by Guru Amar Das as Guru-ka-Chak. He moved his commune of Sikhs there and the place then was called Ramdaspur, after him. This city grew and later became Amritsar – the holiest city of Sikhism. Guru Ram Das expanded the "manji" organization for clerical appointments in Sikh temples, and for revenue collections to theologically and economically support the Sikh movement.