Sunan Ibn Majah 746
سنن ابن ماجه#746Da'ifIt was narrated that Ibn 'Umar said:"Allah's Messenger prohibited prayer from being performed in seven places: The garbage dump, the slaughtering area, the graveyard, the commonly used road, the bathroom, in the area that camels rest at, and above the Ka'bah
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniDaif
Muhammad Fouad Abd al-BaqiDaif
Shuaib Al ArnautVery Daif
Zubair Ali ZaiDaif
In-book reference: 4:12