´Jafar bin Muhammad narrated, that he heard his father narrate, that he heard Jabir, speak of the Pilgrimage of the Prophet:` "The Prophet stood atop as-Safa proclaiming the Tahlil of Allah (saying Lal ilaha illallah) and supplicating in between that."
Related hadith on this topic
Explanation & Benefits
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
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