´It was narrated from Jabir that the Messenger of Allah performed Tawaf, walking rapidly (Raml) for three circuits, and walking at a normal pace for four. Then he recited:` "And take you the Maqam (place) of Ibrahim as a place of prayer." And prayed two Rak`ahs with the Maqam between him and the Ka`bah. Then he touched the Corner, then he went out and said: 'As-Safa and Al-Marwah are two of the symbols of Allah. We will start with that with which Allah started.'"
Hadith Referenceسنن نسائي / كتاب مناسك الحج / 2965
´It was narrated that Jabir said:` "When he went tout the Masjid heading for As-Safa, I heard the Messenger of Allah say: We will start with that with which Allah started.'"
Hafiz Muhammad Ameen
At that time, Safa and Marwah were outside the mosque. Nowadays, they have come within the boundaries of the mosque, and in fact, quite far inside. (For further details, see Hadith: 2964)
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2972
´Jabir said:` "Messenger of Allah went out to As-Safa and said.We will start with that with which Allah started. Then he recited: 'Verifly, as-Safa and Al-Marwah (two Mountains in Makkah) are of the symbols of Allah.'"
Hafiz Muhammad Ameen
English translation:
The commencement of Sa’i from Safa is a unanimously agreed upon issue. There is no difference of opinion in this matter.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 2973