Reference: Fataawa al-Lajnah ad-Daa.imah lil-Buhooth al-‘Ilmiyyah wal-Iftaa. – Volume 11, Page 110, Question 1 of Fatwa No.12084
Question: Is our appointing an ameer (“group” leader) during our Hajj journey permissible or not?
Response: It is legislated for a group whilst travelling, if they are three or more that they appoint an ameer from amongst themselves. It is mentioned in the Sunan of Aboo Daawood on the authority of Aboo Sa’eed al-Khudree (radhi-yAllaahu ‘anhu) that the Messenger of Allaah (sal-Allaahu ‘alayhi wa sallam) said:
«If three depart on a journey, then one of them must lead them (i.e. be the ameer)», [Abu Daawood – Volume 3, Page 81, Hadeeth Reference: 2608; al-Bayhaqee – Volume 5, Page 257; al-Baghawee in Sharhus-Sunnah – Volume 11, Page 23, Hadeeth Reference: 2676].
And with that they should combine their issues and should not be divided in their decisions and nor should there be conflict between them.
And with Allaah lies all success and may Allaah send prayers and salutations upon our Prophet (sal-Allaahu ‘alayhi wa sallam) and his family and his companions.