Yazid bin Abi Ziyad يزيد بن أبي زياد · The Book on Hajj

A man said: "Where should we begin our Hil (Ihram) O Messenger of Allah?" He said: "The people of Al-Madinah begin their Hil (Ihram) from Dhul-Hulaifah, the people from Ash-Sham from Al-Juhfah, and the people of Najd from Qarn." And he (Ibn Umar) said: ("And they say:) "And the people of Yemen from Yalamlam."

the Messenger of Allah said: "Five are Fawasiq which may be killed in the Haram: the mouse, the scorpion, the crow, the kite, and the barbed dog."

The Prophet was asked about whether Umrah was obligatory? He said: "No. But if you perform Umrah it is more virtuous."