´It was narrated from Abu Bakrah that:` The Messenger of Allah (ﷺ) prayed two rak'ahs like this prayer of yours, and he mentioned the eclipse of the sun.
Explanation & Benefits
Hafiz Muhammad Ameen
1493. Commentary: Some scholars have taken "this prayer" to mean the general prayer (salah), and then have used it as evidence for one bowing (ruku‘) in the prayer of eclipse (salat al-kusuf). However, this reasoning is contrary to the explicit and stronger narrations. Practice is based on what is explicit, not on such ambiguous words.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 1493